Stewart was part of a three-man leadership group for 2022, pairing with veteran Patrick Dangerfield as Selwood's right-hand men for the season.
Now ending his record-breaking tenure as captain of the club after a decade, Selwood's successor will have big shoes to fill after Geelong's fearless leader called time on his career.
Stewart and Dangerfield are among several senior Cats who are seen to be in contention for the top job, with the former set to lodge his candidacy this off-season.
"I think that's probably obvious being vice-captain, between myself and Pat (Dangerfield)," Stewart told 7 News.
"There's plenty of worthy people who could take on the role. If that's something the club thinks can come my way then I'll take it with both hands and do my best."
— 7NEWS Melbourne (@7NewsMelbourne) September 29, 2022
Selwood retires after 245 games as captain of the club, an AFL record after surpassing Blues great Stephen Kernahan's record of 226 matches.
He becomes the third straight captain to retire after winning a premiership, following in the footsteps of his predecessors of Cameron Ling and Tom Harley.
Stewart has won four All-Australian nods and a best and fairest honour since joining Geelong ahead of the 2017 season.