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





I, Nicholas Galeone, 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 UBS Commercial Mortgage Trust 2017-C6 (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, Rialto
Capital Advisors, LLC, as Special Servicer, Wilmington Trust, National
Association, as Trustee, Wells Fargo Bank, National Association, as Certificate
Administrator, Wells Fargo Bank, National Association, as Custodian, Pentalpha
Surveillance LLC, as Operating Advisor, CoreLogic Solutions, LLC, as Servicing
Function Participant, KeyBank National Association, as Primary Servicer,
Berkeley Point Capital LLC d/b/a Newmark Knight Frank, as Primary Servicer,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Certificate Administrator on and after November 1, 2021,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian on and after November 1, 2021, Wells Fargo Bank,
National Association, as Primary Servicer for the Meridian Sunrise Village
Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer for the
Meridian Sunrise Village Mortgage Loan, Wilmington Trust, National Association,
as Trustee for the Meridian Sunrise Village Mortgage Loan, Wells Fargo Bank,
National Association, as Custodian for the Meridian Sunrise Village Mortgage
Loan, Pentalpha Surveillance LLC, as Operating Advisor for the Meridian Sunrise
Village Mortgage Loan, CoreLogic Solutions, LLC, as Servicing Function
Participant for the Meridian Sunrise Village Mortgage Loan, Computershare Trust
Company, National Association, as Servicing Function Participant for the
Custodian for the Meridian Sunrise Village Mortgage Loan on and after November
1, 2021, Wells Fargo Bank, National Association, as Primary Servicer for the
Burbank Office Portfolio Mortgage Loan, AEGON USA Realty Advisors, LLC, as
Special Servicer for the Burbank Office Portfolio Mortgage Loan prior to April
9, 2021, Situs Holdings, LLC, as Special Servicer for the Burbank Office
Portfolio Mortgage Loan on and after April 9, 2021, Wilmington Trust, National
Association, as Trustee for the Burbank Office Portfolio Mortgage Loan, Wells
Fargo Bank, National Association, as Custodian for the Burbank Office Portfolio
Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the
Burbank Office Portfolio Mortgage Loan, CoreLogic Solutions, LLC, as Servicing
Function Participant for the Burbank Office Portfolio Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Burbank Office Portfolio Mortgage Loan on
and after November 1, 2021, Wells Fargo Bank, National Association, as Primary
Servicer for the Griffin Portfolio Mortgage Loan, Midland Loan Services, a
Division of PNC Bank, National Association, as Special Servicer for the Griffin
Portfolio Mortgage Loan prior to July 2, 2021, LNR Partners, LLC as Special
Servicer for the Griffin Portfolio Mortgage Loan on and after July 2, 2021,
Wilmington Trust, National Association, as Trustee for the Griffin Portfolio
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Griffin Portfolio Mortgage Loan, Park Bridge Lender Services LLC, as Operating
Advisor for the Griffin Portfolio Mortgage Loan, CoreLogic Solutions, LLC, as
Servicing Function Participant for the Griffin Portfolio Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Griffin Portfolio Mortgage Loan on and
after November 1, 2021, Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer for the DoubleTree Wilmington Mortgage Loan,
Midland Loan Services, a Division of PNC Bank, National Association, as Special
Servicer for the DoubleTree Wilmington Mortgage Loan, Wells Fargo Bank,
National Association, as Trustee for the DoubleTree Wilmington Mortgage Loan,
Wells Fargo Bank, National Association, as Custodian for the DoubleTree
Wilmington Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor
for the DoubleTree Wilmington Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the DoubleTree Wilmington Mortgage Loan on and after November 1, 2021, Midland
Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer for the At Home Portfolio Mortgage Loan, Midland Loan Services, a
Division of PNC Bank, National Association, as Special Servicer for the At Home
Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for
the At Home Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the At Home Portfolio Mortgage Loan, Park Bridge Lender Services
LLC, as Operating Advisor for the At Home Portfolio Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the At Home Portfolio Mortgage Loan on and
after November 1, 2021, Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer for the Chelsea Multifamily Portfolio Mortgage
Loan, Midland Loan Services, a Division of PNC Bank, National Association, as
Special Servicer for the Chelsea Multifamily Portfolio Mortgage Loan, Wells
Fargo Bank, National Association, as Trustee for the Chelsea Multifamily Portfolio
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Chelsea Multifamily Portfolio Mortgage Loan, Park Bridge Lender Services LLC,
as Operating Advisor for the Chelsea Multifamily Portfolio Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Chelsea Multifamily Portfolio Mortgage
Loan on and after November 1, 2021, Wells Fargo Bank, National Association, as
Primary Servicer for the Bass Pro & Cabela's Portfolio Mortgage Loan,
Midland Loan Services, a Division of PNC Bank, National Association, as Special
Servicer for the Bass Pro & Cabela's Portfolio Mortgage Loan, Wilmington
Trust, National Association, as Trustee for the Bass Pro & Cabela's Portfolio
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Bass Pro & Cabela's Portfolio Mortgage Loan, Pentalpha Surveillance LLC, as
Operating Advisor for the Bass Pro & Cabela's Portfolio Mortgage Loan,
CoreLogic Solutions, LLC, as Servicing Function Participant for the Bass Pro
& Cabela's Portfolio Mortgage Loan, Computershare Trust Company, National
Association, as Servicing Function Participant for the Custodian for the Bass
Pro & Cabela’s Portfolio Mortgage Loan on and after November 1, 2021,
Midland Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer for the 2U Headquarters Mortgage Loan, Midland Loan Services, a
Division of PNC Bank, National Association, as Special Servicer for the 2U
Headquarters Mortgage Loan, Wells Fargo Bank, National Association, as Trustee
for the 2U Headquarters Mortgage Loan, Wells Fargo Bank, National Association,
as Custodian for the 2U Headquarters Mortgage Loan, Park Bridge Lender Services
LLC, as Operating Advisor for the 2U Headquarters Mortgage Loan,Computershare Trust
Company, National Association, as Servicing Function Participant for the
Custodian for the 2U Headquarters Mortgage Loan on and after November 1, 2021,
KeyBank National Association, as Primary Servicer for the Yorkshire &
Lexington Towers Mortgage Loan, CWCapital Asset Management LLC, as Special
Servicer for the Yorkshire & Lexington Towers Mortgage Loan prior to April
26, 2021, Torchlight Loan Services, LLC, as Special Servicer for the Yorkshire
& Lexington Towers Mortgage Loan on and after April 26, 2021, Wells Fargo
Bank, National Association, as Trustee for the Yorkshire & Lexington Towers
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Yorkshire & Lexington Towers Mortgage Loan, Park Bridge Lender Services
LLC, as Operating Advisor for the Yorkshire & Lexington Towers Mortgage
Loan, Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Yorkshire & Lexington Towers Mortgage
Loan on and after November 1, 2021, Wells Fargo Bank, National Association, as
Primary Servicer for the Logan Town Center Mortgage Loan, LNR Partners, LLC, as
Special Servicer for the Logan Town Center Mortgage Loan, Wilmington Trust,
National Association, as Trustee for the Logan Town Center Mortgage Loan, Wells
Fargo Bank, National Association, as Custodian for the Logan Town Center
Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the
Logan Town Center Mortgage Loan, CoreLogic Solutions, LLC, as Servicing
Function Participant for the Logan Town Center Mortgage Loan, Computershare
Trust Company, National Association, as Servicing Function Participant for the
Custodian for the Logan Town Center Mortgage Loan on and after November 1, 2021,
KeyBank National Association, as Primary Servicer for the HRC Hotels Portfolio
Mortgage Loan, KeyBank National Association, as Special Servicer for the HRC
Hotels Portfolio Mortgage Loan, Wilmington Trust, National Association, as
Trustee for the HRC Hotels Portfolio Mortgage Loan, Wells Fargo Bank, National
Association, as Custodian for the HRC Hotels Portfolio Mortgage Loan, Pentalpha
Surveillance LLC, as Operating Advisor for the HRC Hotels Portfolio Mortgage
Loan, Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the HRC Hotels Portfolio Mortgage Loan on and
after November 1, 2021, Wells Fargo Bank, National Association, as Primary
Servicer for the Belden Park Crossing Mortgage Loan, KeyBank National
Association, as Special Servicer for the Belden Park Crossing Mortgage Loan,
Wilmington Trust, National Association, as Trustee for the Belden Park Crossing
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Belden Park Crossing Mortgage Loan, Pentalpha Surveillance LLC, as Operating
Advisor for the Belden Park Crossing Mortgage Loan, CoreLogic Solutions, LLC,
as Servicing Function Participant for the Belden Park Crossing Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Belden Park Crossing Mortgage Loan on and
after November 1, 2021, Wells Fargo Bank, National Association, as Primary
Servicer for the National Office Portfolio Mortgage Loan, KeyBank National
Association, as Special Servicer for the National Office Portfolio Mortgage
Loan, Wilmington Trust, National Association, as Trustee for the National
Office Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the National Office Portfolio Mortgage Loan, Pentalpha
Surveillance LLC, as Operating Advisor for the National Office Portfolio
Mortgage Loan, CoreLogic Solutions, LLC, as Servicing Function Participant for
the National Office Portfolio Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the National Office Portfolio Mortgage Loan on and after November 1, 2021,
Wells Fargo Bank, National Association, as Primary Servicer for the Marketplace
at Four Corners Mortgage Loan, KeyBank National Association, as Special
Servicer for the Marketplace at Four Corners Mortgage Loan, Wilmington Trust,
National Association, as Trustee for the Marketplace at Four Corners Mortgage
Loan, Wells Fargo Bank, National Association, as Custodian for the Marketplace
at Four Corners Mortgage Loan, Pentalpha Surveillance LLC, as Operating Advisor
for the Marketplace at Four Corners Mortgage Loan, CoreLogic Solutions, LLC, as
Servicing Function Participant for the Marketplace at Four Corners Mortgage
Loan, Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Marketplace at Four Corners Mortgage Loan
on and after November 1, 2021, Midland Loan Services, a Division of PNC Bank,
National Association, as Primary Servicer for the 111 West Jackson Mortgage
Loan, LNR Partners, LLC, as Special Servicer for the 111 West Jackson Mortgage
Loan, Wells Fargo Bank, National Association, as Trustee for the 111 West
Jackson Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for
the 111 West Jackson Mortgage Loan, Park Bridge Lender Services LLC, as
Operating Advisor for the 111 West Jackson Mortgage Loan, and Computershare
Trust Company, National Association, as Servicing Function Participant for the
Custodian for the 111 West Jackson Mortgage Loan on and after November 1, 2021.







Dated:
March 10,
2022





/s/ Nicholas Galeone

Nicholas Galeone

President

(senior
officer in charge of securitization of the depositor)