UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 13F

                              FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:  December 31, 1999

Check here if Amendment [ ]; Amendment Number:
This Amendment (Check only one.): [ ] is a restatement.
                                  [ ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:     FIRST MERCHANTS BANK, N.A.
Address:  200 EAST JACKSON STREET
          MUNCIE, IN  47305-2814

13F File Number:  28-2360

The instituional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herin is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person signing this Report on Behalf of Reporting Manger:

Name:   Mark A. Collison
Title:  Vice President
Phone:  (765) 747-1362
Signature, Place, and Date of Signing:

        Mark A. Collison     Muncie, IN     February 14, 2000

Report Type (Ceck only one.):

[x]  13F HOLDING REPORT.
[ ]  13F NOTICE.
[ ]  COMBINATION REPORT.

List of Other Managers reporting for this Manager:

I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITITES EXCHANGE ACT OF 1934.

<PAGE>

                             FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:      None

Form 13F Information Table Entry Total: 117

Form 13F Information Table Value Total: $391,347,000


List of Other Included Managers:

No.     13F File Number     Name

None

<PAGE>
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                                                                  FORM 13F INFORMATION TABLE
                                                           VALUE   SHARES/  SH/ PUT/ INVSTMT    OTHER          VOTING AUTHORITY
        NAME OF ISSUER         TITLE OF CLASS     CUSIP   (X$1000) PRN AMT  PRN CALL DSCRETN   MANAGERS     SOLE    SHARED    NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ANB CORPORATION                COM              001926104     3245    81644 SH       SOLE                    81644        0        0
ANB CORPORATION                COM              001926104      387     9754 SH       DEFINED                  3254     6500        0
AT & T CORP                    COM              001957109     4625    91030 SH       SOLE                    89580      450     1000
AT & T CORP                    COM              001957109      510    10056 SH       DEFINED                  9456      600        0
ABBOTT LABS                    COM              002824100      580    16000 SH       SOLE                    16000        0        0
ALBERTSONS INC                 COM              013104104     3300   102350 SH       SOLE                   101400      450      500
ALLSTATE                       COM              020002101      439    18250 SH       SOLE                    17150      600      500
ALLTRISTA CORPORATION          COM              020040101      870    39338 SH       SOLE                    39288       50        0
AMERICAN HOME PRODS CORP       COM              026609107     4207   107186 SH       SOLE                   104286      400     2500
AMERICAN INTERNATIONAL GRP     COM              026874107    14413   133309 SH       SOLE                   132460      300      549
AMERICAN INTERNATIONAL GRP     COM              026874107      285     2644 SH       DEFINED                  2644        0        0
APPLIED MATLS INC              COM              038222105      331     2615 SH       SOLE                     2615        0        0
AUTOMATIC DATA PROCESSING      COM              053015103     8241   152980 SH       SOLE                   152030      350      600
AUTOMATIC DATA PROCESSING      COM              053015103      274     5100 SH       DEFINED                  5100        0        0
AVERY DENNISON CORP            COM              053611109     1730    23750 SH       SOLE                    22850      400      500
BP AMOCO PLC                   ADR              055622104     8741   147383 SH       SOLE                   134895     9842     2646
BP AMOCO PLC                   ADR              055622104     1481    24982 SH       DEFINED                 11154      528    13300
BALL CORP                      COM              058498106     6968   176992 SH       SOLE                   176145      847        0
BANKAMERICA CORP NEW           COM              060505104     3079    61374 SH       SOLE                    60674        0      700
BANK ONE CORPORATION           COM              06423A103     4091   127873 SH       SOLE                   126973        0      900
BANK ONE CORPORATION           COM              06423A103      219     6860 SH       DEFINED                  6860        0        0
BAUSCH & LOMB INC              COM              071707103      212     3100 SH       SOLE                     3100        0        0
BELL ATLANTIC CORP             COM              077853109     4875    79200 SH       SOLE                    77600     1200      400
BELL ATLANTIC CORP             COM              077853109      225     3656 SH       DEFINED                  3656        0        0
BELLSOUTH CORP                 COM              079860102     5598   119604 SH       SOLE                   116004     3400      200
BELLSOUTH CORP                 COM              079860102      365     7800 SH       DEFINED                  7800        0        0
BRISTOL-MYERS SQUIBB           COM              110122108     8834   137651 SH       SOLE                   136851      300      500
BRISTOL-MYERS SQUIBB           COM              110122108      544     8490 SH       DEFINED                  8490        0        0
CTS CORP                       COM              126501105      286     3800 SH       DEFINED                  3800        0        0
CHEVRON CORPORATION            COM              166751107     3782    43665 SH       SOLE                    42165      800      700
CISCO SYSTEMS                  COM              17275R102     4263    39805 SH       SOLE                    37755     1050     1000
COCA COLA CO                   COM              191216100     1608    27611 SH       SOLE                    27510      101        0
COLGATE PALMOLIVE CO           COM              194162103     1033    15900 SH       SOLE                    15900        0        0
COLGATE PALMOLIVE CO           COM              194162103      208     3200 SH       DEFINED                  3200        0        0
DISNEY WALT COMPANY            COM              254687106     4759   162707 SH       SOLE                   160657      150     1900
DOW CHEM CO                    COM              260543103     3230    24180 SH       SOLE                    24180        0        0
DU PONT E I DE NEMOURS         COM              263534109      283     4300 SH       SOLE                     4300        0        0
DUKE ENERGY CORP               COM              264399106     2508    50041 SH       SOLE                    49041      200      800
EMC CORPORATION                COM              268648102     4498    41176 SH       SOLE                    39226     1350      600
EASTMAN KODAK CO               COM              277461109      261     3949 SH       SOLE                     3949        0        0
EMERSON ELEC CO                COM              291011104     5589    97428 SH       SOLE                    95978      950      500
EMERSON ELEC CO                COM              291011104      453     7900 SH       DEFINED                  7900        0        0
ENRON CORP                     COM              293561106     6195   139640 SH       SOLE                   138240      400     1000
EXXON MOBIL CORP               COM              30231G102     6641    82444 SH       SOLE                    79428     1828     1188
EXXON MOBIL CORP               COM              30231G102      221     2744 SH       DEFINED                  2248        0      496
FANNIE MAE                     COM              313586109      230     3700 SH       SOLE                     3700        0        0
FIFTH-THIRD BANCORP            COM              316773100      246     3364 SH       SOLE                     3364        0        0
FIRST MERCHANTS CORP           COM              320817109     9881   376440 SH       SOLE                   357131    12837     6472
FIRST MERCHANTS CORP           COM              320817109     3995   152210 SH       DEFINED                118685    33525        0
FORD MOTOR CO                  COM              345370100      226     4248 SH       SOLE                     3948        0      300
GTE CORP                       COM              362320103     6641    94129 SH       SOLE                    92439     1090      600
GTE CORP                       COM              362320103      354     5028 SH       DEFINED                  5028        0        0
GANNETT COMPANY INC            COM              364730101     1712    21000 SH       SOLE                    20800        0      200
GAP INC                        COM              364760108      295     6434 SH       SOLE                     6434        0        0
GATEWAY INC                    COM              367626108      201     2800 SH       SOLE                     2800        0        0
GENERAL ELEC CO                COM              369604103    22605   146077 SH       SOLE                   143177     1600     1300
GENERAL ELEC CO                COM              369604103     1641    10610 SH       DEFINED                 10610        0        0
GENERAL MTRS CORP              COM              370442105      253     3494 SH       SOLE                     3494        0        0
GILLETTE CO                    COM              375766102     5254   127600 SH       SOLE                   127100        0      500
HARSCO CORP                    COM              415864107      887    27964 SH       SOLE                    27964        0        0
HEINZ H J CO                   COM              423074103      339     8516 SH       SOLE                     7016        0     1500
HEWLETT PACKARD CO             COM              428236103    12474   109670 SH       SOLE                   107420     1750      500
HEWLETT PACKARD CO             COM              428236103      477     4200 SH       DEFINED                  4200        0        0
INGERSOLL RAND CO              COM              456866102     6572   119375 SH       SOLE                   117425     1250      700
INTEL CORP                     COM              458140100    19258   233978 SH       SOLE                   227318     2060     4600
INTEL CORP                     COM              458140100     1242    15100 SH       DEFINED                 14300      800        0
INTL BUSINESS MACHINES CORP    COM              459200101      555     5146 SH       SOLE                     4346        0      800
IPALCO ENTERPRISES INC         COM              462613100      225    13200 SH       SOLE                    12600        0      600
JOHNSON & JOHNSON              COM              478160104     7783    83471 SH       SOLE                    82771      500      200
JOHNSON & JOHNSON              COM              478160104      648     6950 SH       DEFINED                  6950        0        0
KELLOGG CO                     COM              487836108      300     9760 SH       SOLE                     9760        0        0
KIMBERLY CLARK CORP            COM              494368103     5352    81800 SH       SOLE                    81000      300      500
LILLY ELI & CO                 COM              532457108     9170   137907 SH       SOLE                   129127     6530     2250
LILLY ELI & CO                 COM              532457108      629     9470 SH       DEFINED                  9470        0        0
LINCOLN NATL CORP IND          COM              534187109     4792   119800 SH       SOLE                   117550     1000     1250
LINCOLN NATL CORP IND          COM              534187109      228     5700 SH       DEFINED                  5700        0        0
LOWE'S COMPANIES INC           COM              548661107     2545    42600 SH       SOLE                    40500     1500      600
LUCENT TECHNOLOGIES            COM              549463107     8598   114650 SH       SOLE                   112150      600     1900
LUCENT TECHNOLOGIES            COM              549463107      973    12984 SH       DEFINED                 12468      516        0
MARSH SUPERMARKETS INC CL B    COM              571783208     1658   163928 SH       SOLE                   163928        0        0
MARSH SUPERMARKETS INC CL A    COM              571783307     4343   313141 SH       SOLE                   313141        0        0
MASCO CORP                     COM              574599106     1732    68300 SH       SOLE                    67500      400      400
MAY DEPARTMENT STORES          COM              577778103     2695    83575 SH       SOLE                    83025        0      550
MCDONALDS CORP                 COM              580135101     9000   223290 SH       SOLE                   218990     1900     2400
MCDONALDS CORP                 COM              580135101      403    10000 SH       DEFINED                 10000        0        0
MEDTRONIC INCORPORATED         COM              585055106      741    20344 SH       SOLE                    20344        0        0
MERCK & CO INC                 COM              589331107     7279   108356 SH       SOLE                   106250     1106     1000
MERCK & CO INC                 COM              589331107      450     6704 SH       DEFINED                  6304      400        0
MICROSOFT CORPORATION          COM              594918104    13319   114082 SH       SOLE                   113607      375      100
MICROSOFT CORPORATION          COM              594918104      910     7800 SH       DEFINED                  7800        0        0
MINNESOTA MNG & MFG CO         COM              604059105      835     8536 SH       SOLE                     8436      100        0
JP MORGAN & CO INC             COM              616880100     2810    22200 SH       SOLE                    22200        0        0
MOTOROLA INC                   COM              620076109     8438    57305 SH       SOLE                    56115     1190        0
MOTOROLA INC                   COM              620076109      493     3350 SH       DEFINED                  3350        0        0
PEPSICO INC                    COM              713448108     4675   132633 SH       SOLE                   128733      600     3300
PEPSICO INC                    COM              713448108      418    11865 SH       DEFINED                 11865        0        0
PFIZER INC                     COM              717081103      367    11341 SH       SOLE                    10141     1200        0
PHILIP MORRIS COS              COM              718154107     1052    45750 SH       SOLE                    41150     4600        0
PROCTER & GAMBLE CO            COM              742718109     8441    77046 SH       SOLE                    76846        0      200
SBC COMMUNICATIONS INC         COM              78387G103     7087   145380 SH       SOLE                   143280     1500      600
SBC COMMUNICATIONS INC         COM              78387G103      476     9770 SH       DEFINED                  9370      400        0
SARA LEE CORP                  COM              803111103     4193   190114 SH       SOLE                   187814     1300     1000
SARA LEE CORP                  COM              803111103      327    14840 SH       DEFINED                 14840        0        0
SCHERING-PLOUGH CORP           COM              806605101      440    10400 SH       SOLE                    10400        0        0
SCHLUMBERGER LTD               COM              806857108     3681    65600 SH       SOLE                    64250      300     1050
SHERWIN-WILLIAMS CO            COM              824348106      531    25300 SH       SOLE                    24700        0      600
SYSCO CORP                     COM              871829107     5831   147400 SH       SOLE                   146800      200      400
SYSCO CORP                     COM              871829107      387     9800 SH       DEFINED                  9800        0        0
TECO ENERGY                    COM              872375100     1034    55750 SH       SOLE                    55750        0        0
TIME WARNER INC                COM              887315109     1677    23200 SH       SOLE                    23200        0        0
TOWN & COUNTRY TRUST           COM              892081100      181    10100 SH       SOLE                     8100        0     2000
UNION PLANTERS CORPORATION     COM              908068109      630    16000 SH       SOLE                    16000        0        0
UNITED TECHNOLOGIES CORP       COM              913017109     7069   108760 SH       SOLE                   107460      550      750
WAL MART STORES INC            COM              931142103     9245   133754 SH       SOLE                   131574     1980      200
WAL MART STORES INC            COM              931142103     1022    14800 SH       DEFINED                 14800        0        0
WELLS FARGO & CO  (NEW)        COM              949746101     4255   105256 SH       SOLE                   103556      400     1300
WEYERHAEUSER CO                COM              962166104     2154    30000 SH       SOLE                    30000        0        0
</TABLE>