# 1984 Custom Credit Australian Indoor Championships – Singles

John McEnroe was the defending champion but did not compete that year.
Anders Järryd won in the final 6–3, 6–2, 6–4 against Ivan Lendl.

## Seeds

* Ivan Lendl (final)
* Anders Järryd (champion)
* Pat Cash (first round)
* Eliot Teltscher (semifinals)
* Paul McNamee (second round)
* Peter Fleming (quarterfinals)
* n/a
* John Fitzgerald (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Ivan Lendl | 6 | 6 | | | | | | |
| 4 | Eliot Teltscher | 1 | 1 | | | | | | |
| 4 | Eliot Teltscher | 1 | 1 | | 1 | Ivan Lendl | 3 | 2 | 4 |
| | | | | | 2 | Anders Järryd | 6 | 6 | 6 |
| | Ben Testerman | 6 | 2 | 6 | 2 | Anders Järryd | 6 | 6 | 6 |
| 2 | Anders Järryd | 2 | 6 | 7 | | | | | |

### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | I Lendl | 6 | 6 | | | | | | | | | | | | | | |
| | W Masur | 2 | 2 | | 1 | I Lendl | 6 | 6 | | | | | | | | | |
| | C Lewis | 7 | 3 | 4 | | G Layendecker | 3 | 3 | | | | | | | | | |
| | G Layendecker | 6 | 6 | 6 | | | | | | 1 | I Lendl | 6 | 6 | | | | |
| | J Frawley | 6 | 6 | | | | | | | 6 | P Fleming | 4 | 2 | | | | |
| | B Dyke | 4 | 3 | | | J Frawley | 5 | 7 | 3 | | | | | | | | |
| Q | R Nixon | 3 | 4 | | 6 | P Fleming | 7 | 5 | 6 | | | | | | | | |
| 6 | P Fleming | 6 | 6 | | | | | | | | | | | 1 | I Lendl | 6 | 6 |
| 4 | E Teltscher | 7 | 6 | 6 | | | | | | | | | | 4 | E Teltscher | 1 | 1 |
| | D Saltz | 6 | 7 | 1 | 4 | E Teltscher | 6 | 6 | | | | | | | | | |
| | L Bourne | 6 | 4 | 7 | | L Bourne | 1 | 3 | | | | | | | | | |
| | M Kratzmann | 3 | 6 | 5 | | | | | | 4 | E Teltscher | 6 | 6 | | | | |
| | B Drewett | 6 | 6 | | | | | | | | B Drewett | 3 | 0 | | | | |
| | C Hooper | 4 | 2 | | | B Drewett | 3 | 6 | 7 | | | | | | | | |
| | M Freeman | 6 | 6 | 7 | | M Freeman | 6 | 1 | 5 | | | | | | | | |
| LL | L Shiras | 4 | 7 | 5 | | | | | | | | | | | | | |

### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | P McNamee | 6 | 7 | | | | | | | | | | | | | | |
| | R Simpson | 4 | 6 | | 5 | P McNamee | 4 | 5 | | | | | | | | | |
| Q | R Knapp | 4 | 0 | | | M De Palmer | 6 | 7 | | | | | | | | | |
| | M De Palmer | 6 | 6 | | | | | | | M De Palmer | 3 | 2 | | | | | |
| | M Edmondson | 6 | 4 | 4 | | | | | | B Testerman | 6 | 6 | | | | | |
| | H Simonsson | 0 | 6 | 6 | | H Simonsson | 2 | 5 | | | | | | | | | |
| | B Testerman | 7 | 4 | 6 | | B Testerman | 6 | 7 | | | | | | | | | |
| 3 | P Cash | 6 | 6 | 4 | | | | | | | | | | B Testerman | 6 | 2 | 6 |
| 8 | J Fitzgerald | 4 | 6 | 6 | | | | | | | | | 2 | A Järryd | 2 | 6 | 7 |
| Q | J Canter | 6 | 4 | 3 | 8 | J Fitzgerald | 4 | 6 | | | | | | | | | |
| Q | C Johnstone | 1 | 4 | | | V Amritraj | 6 | 7 | | | | | | | | | |
| | V Amritraj | 6 | 6 | | | | | | | V Amritraj | 1 | 2 | | | | | |
| | M Leach | 6 | 3 | 7 | | | | | 2 | A Järryd | 6 | 6 | | | | | |
| | S Youl | 3 | 6 | 6 | | M Leach | 6 | 4 | | | | | | | | | |
| | J Alexander | 1 | 1 | | 2 | A Järryd | 7 | 6 | | | | | | | | | |
| 2 | A Järryd | 6 | 6 | | | | | | | | | | | | | | |