EXHIBIT 21.1

The following companies are subsidiaries of Teekay Tankers Ltd. as at August 7, 2024:

Name of Subsidiary	State or Jurisdiction of Incorporation		Proportion of Ownership Interest
Athens Spirit L.L.C.		Marshall Islands		100	%
Atlanta Spirit L.L.C.		Marshall Islands		100	%
Axel Spirit L.L.C.		Marshall Islands		100	%
Barcelona Spirit L.L.C.		Marshall Islands		100	%
Beijing Spirit L.L.C.		Marshall Islands		100	%
Dilong Spirit L.L.C.		Marshall Islands		100	%
Donegal Spirit L.L.C.		Marshall Islands		100	%
Erik Spirit L.L.C.		Marshall Islands		100	%
Esther Spirit L.L.C.		Marshall Islands		100	%
Everest Spirit Holding L.L.C.		Marshall Islands		100	%
Galway Spirit L.L.C.		Marshall Islands		100	%
Helga Spirit L.L.C.		Marshall Islands		100	%
Jiaolong Spirit L.L.C.		Marshall Islands		100	%
Kaveri Spirit L.L.C.		Marshall Islands		100	%
Limerick Spirit L.L.C.		Marshall Islands		100	%
London Spirit L.L.C.		Marshall Islands		100	%
Los Angeles Spirit L.L.C.		Marshall Islands		100	%
Matterhorn Spirit L.L.C.		Marshall Islands		100	%
Montreal Spirit L.L.C.		Marshall Islands		100	%
Orchid Spirit L.L.C.		Marshall Islands		100	%
Pinnacle Spirit L.L.C.		Marshall Islands		100	%
Rio Spirit L.L.C.		Marshall Islands		100	%
Rome Spirit L.L.C.		Marshall Islands		100	%
Seoul Spirit L.L.C.		Marshall Islands		100	%
Shenlong Spirit L.L.C.		Marshall Islands		100	%
STX Hull No. S1672 L.L.C.		Marshall Islands		100	%
Summit Spirit L.L.C.		Marshall Islands		100	%
Sydney Spirit L.L.C.		Marshall Islands		100	%
T.I.L. Holdings Ltd.		Marshall Islands		100	%
T.I.L. I L.L.C.		Marshall Islands		100	%
T.I.L. II L.L.C.		Marshall Islands		100	%
T.I.L. III L.L.C.		Marshall Islands		100	%
T.I.L. IV L.L.C.		Marshall Islands		100	%
T.I.L. IX L.L.C.		Marshall Islands		100	%
T.I.L. V L.L.C.		Marshall Islands		100	%
T.I.L. VI L.L.C.		Marshall Islands		100	%
T.I.L. VII L.L.C.		Marshall Islands		100	%
T.I.L. VIII L.L.C.		Marshall Islands		100	%
T.I.L. X L.L.C.		Marshall Islands		100	%
T.I.L. XI L.L.C.		Marshall Islands		100	%
T.I.L. XII L.L.C.		Marshall Islands		100	%
T.I.L. XIII L.L.C.		Marshall Islands		100	%
T.I.L. XIV L.L.C.		Marshall Islands		100	%
Tanker Investments Ltd.		Marshall Islands		100	%
Teekay Chartering Limited		Marshall Islands		100	%
Teekay Marine (Singapore) Pte Ltd.		Singapore		100	%
Teekay Marine Holdings Limited		Marshall Islands		100	%
Teekay Marine Ltd.		Marshall Islands		100	%
Teekay Marine Solutions Inc.		USA		100	%
Teekay Tanker Operations Ltd.		Marshall Islands		100	%
Teekay Tankers Chartering L.L.C.		Marshall Islands		100	%
Teekay Tankers Chartering Pte. Ltd.		Singapore		100	%
Teekay Tankers Holdings Limited		Marshall Islands		100	%
Teekay Tankers HZ Hull No. H-1586 L.L.C.		Marshall Islands		100	%
Teekay Tankers HZ Hull No. H-1587 L.L.C.		Marshall Islands		100	%

Teekay Tankers HZ Hull No. H-1592 L.L.C.	Marshall Islands	100	%
Teekay Tankers HZ Hull No. H-1593 L.L.C.	Marshall Islands	100	%
Teekay Tankers TS Hull No. S-1415 L.L.C.	Marshall Islands	100	%
Teekay Workboats L.L.C.	USA	100	%
Tianlong Spirit L.L.C.	Marshall Islands	100	%
Tokyo Spirit L.L.C.	Marshall Islands	100	%
Zenith Spirit L.L.C.	Marshall Islands	100	%