EX-31
Rule 13a-14(d)/15d-14(d) Certifications.





I,
Leland F. Bunch, III, certify that:



1. I have
reviewed this report on Form 10-K and all reports on Form 10-D required to be
filed in respect of the period covered by this report on Form 10-K of the BANK
2018-BNK15 (the "Exchange Act periodic reports");



2.
Based on my knowledge, the Exchange Act periodic reports, taken as a whole, do
not contain any untrue statement of a material fact or omit to state a material
fact necessary to make the statements made, in light of the circumstances under
which such statements were made, not misleading with respect to the period
covered by this report;



3.
Based on my knowledge, all of the distribution, servicing and other information
required to be provided under Form 10-D for the period covered by this report
is included in the Exchange Act periodic reports;



4.
Based on my knowledge and the servicer compliance statements required in this
report under Item 1123 of Regulation AB, and except as disclosed in the
Exchange Act periodic reports, the servicers have fulfilled their obligations
under the servicing agreements in all material respects; and



5. All
of the reports on assessment of compliance with servicing criteria for
asset-backed securities and their related attestation reports on assessment of
compliance with servicing criteria for asset-backed securities required to be
included in this report in accordance with Item 1122 of Regulation AB and
Exchange Act Rules 13a-18 and 15d-18 have been included as an exhibit to this
report, except as otherwise disclosed in this report. Any material instances of
noncompliance described in such reports have been disclosed in this report on
Form 10-K.



In
giving the certifications above, I have reasonably relied on information
provided to me by the following unaffiliated parties:



Wells
Fargo Bank, National Association, as Master Servicer, National Cooperative
Bank, N.A., as NCB Master Servicer, LNR Partners, LLC, as Special Servicer, LNR
Partners, LLC, as Special Servicer of the Best Western Spring TX Mortgage Loan,
National Cooperative Bank, N.A., as NCB Special Servicer, Wilmington Trust,
National Association, as Trustee, Wells Fargo Bank, National Association, as
Certificate Administrator, Wells Fargo Bank, National Association, as
Custodian, Park Bridge Lender Services LLC, as Operating Advisor, CoreLogic
Solutions, LLC, as Servicing Function Participant, Computershare Trust Company,
National Association, as Servicing Function Participant for the Certificate
Administrator, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian, Wells Fargo Bank, National Association,
as Primary Servicer for the Aventura Mall Mortgage Loan, CWCapital Asset
Management LLC, as Special Servicer for the Aventura Mall Mortgage Loan,
Wilmington Trust, National Association, as Trustee for the Aventura Mall
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Aventura Mall Mortgage Loan, Park Bridge Lender Services LLC, as Operating
Advisor for the Aventura Mall Mortgage Loan, CoreLogic Commercial Real Estate
Services, Inc., as Servicing Function Participant for the Aventura Mall
Mortgage Loan, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian for the Aventura Mall Mortgage Loan,
Wells Fargo Bank, National Association, as Primary Servicer for the Pfizer
Building Mortgage Loan, Mount Street US (Georgia) LLP, as Special Servicer for
the Pfizer Building Mortgage Loan, Wilmington Trust, National Association, as
Trustee for the Pfizer Building Mortgage Loan, Wells Fargo Bank, National
Association, as Custodian for the Pfizer Building Mortgage Loan, Pentalpha
Surveillance LLC, as Operating Advisor for the Pfizer Building Mortgage Loan,
CoreLogic Commercial Real Estate Services, Inc., as Servicing Function
Participant for the Pfizer Building Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the Pfizer Building Mortgage Loan, Wells Fargo Bank, National Association, as
Primary Servicer for the Millennium Partners Portfolio Mortgage Loan, Wells
Fargo Bank, National Association, as Special Servicer for the Millennium
Partners Portfolio Mortgage Loan, Wilmington Trust, National Association, as
Trustee for the Millennium Partners Portfolio Mortgage Loan, Wells Fargo Bank,
National Association, as Custodian for the Millennium Partners Portfolio
Mortgage Loan, CoreLogic Commercial Real Estate Services, Inc., as Servicing
Function Participant for the Millennium Partners Portfolio Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Millennium Partners Portfolio Mortgage
Loan, Midland Loan Services, a Division of PNC Bank, National Association, as
Primary Servicer for the Plaza Frontenac Mortgage Loan, Midland Loan Services,
a Division of PNC Bank, National Association, as Special Servicer for the Plaza
Frontenac Mortgage Loan prior to April 27, 2023, K-Star Asset Management LLC,
as Special Servicer for the Plaza Frontenac Mortgage Loan on and after April
27, 2023, Wells Fargo Bank, National Association, as Trustee for the Plaza
Frontenac Mortgage Loan, Wells Fargo Bank, National Association, as Custodian
for the Plaza Frontenac Mortgage Loan, Pentalpha Surveillance LLC, as Operating
Advisor for the Plaza Frontenac Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the Plaza Frontenac Mortgage Loan, Wells Fargo Bank, National Association, as
Primary Servicer for the Starwood Hotel Portfolio Mortgage Loan, Midland Loan
Services, a Division of PNC Bank, National Association, as Special Servicer for
the Starwood Hotel Portfolio Mortgage Loan prior to April 24, 2023, K-Star
Asset Management LLC, as Special Servicer for the Starwood Hotel Portfolio
Mortgage Loan on and after April 24, 2023, Wilmington Trust, National
Association, as Trustee for the Starwood Hotel Portfolio Mortgage Loan, Wells
Fargo Bank, National Association, as Custodian for the Starwood Hotel Portfolio
Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the
Starwood Hotel Portfolio Mortgage Loan, CoreLogic Commercial Real Estate
Services, Inc., as Servicing Function Participant for the Starwood Hotel
Portfolio Mortgage Loan, Computershare Trust Company, National Association, as
Servicing Function Participant for the Custodian for the Starwood Hotel
Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as Primary
Servicer for the Moffett Towers - Buildings E, F, G Mortgage Loan, Rialto
Capital Advisors, LLC, as Special Servicer for the Moffett Towers - Buildings
E, F, G Mortgage Loan, Wilmington Trust, National Association, as Trustee for
the Moffett Towers - Buildings E, F, G Mortgage Loan, Wells Fargo Bank,
National Association, as Custodian for the Moffett Towers - Buildings E, F, G
Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the
Moffett Towers - Buildings E, F, G Mortgage Loan, CoreLogic Commercial Real
Estate Services, Inc., as Servicing Function Participant for the Moffett Towers
- Buildings E, F, G Mortgage Loan, Computershare Trust Company, National
Association, as Servicing Function Participant for the Custodian for the
Moffett Towers - Buildings E, F, G Mortgage Loan, Wells Fargo Bank, National
Association, as Primary Servicer for the 2020 Fifth Avenue Mortgage Loan,
Rialto Capital Advisors, LLC, as Special Servicer for the 2020 Fifth Avenue
Mortgage Loan, Wilmington Trust, National Association, as Trustee for the 2020
Fifth Avenue Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the 2020 Fifth Avenue Mortgage Loan, Pentalpha Surveillance LLC,
as Operating Advisor for the 2020 Fifth Avenue Mortgage Loan, CoreLogic
Commercial Real Estate Services, Inc., as Servicing Function Participant for the
2020 Fifth Avenue Mortgage Loan, Computershare Trust Company, National
Association, as Servicing Function Participant for the Custodian for the 2020
Fifth Avenue Mortgage Loan, Wells Fargo Bank, National Association, as Primary
Servicer for the Carriage Place Mortgage Loan, KeyBank National Association, as
Special Servicer for the Carriage Place Mortgage Loan, Wilmington Trust,
National Association, as Trustee for the Carriage Place Mortgage Loan, Wells
Fargo Bank, National Association, as Custodian for the Carriage Place Mortgage
Loan, Park Bridge Lender Services LLC, as Operating Advisor for the Carriage
Place Mortgage Loan, CoreLogic Commercial Real Estate Services, Inc., as
Servicing Function Participant for the Carriage Place Mortgage Loan, and Computershare
Trust Company, National Association, as Servicing Function Participant for the
Custodian for the Carriage Place Mortgage Loan.







Dated:
March 15, 2024





/s/
Leland F. Bunch, III

Leland
F. Bunch, III

President
and Chief Executive Officer

(senior
officer in charge of securitization of the depositor)