Smith, 26, has made 181 starts for the Reds since breaking through in 2013.
He told the club’s official website: “Obviously, I’m really happy to be signing again.
“I thoroughly enjoyed working under Danny [Grainger] and Ruddy [Steven Rudd] last year and they’ve got together a great set of lads.
“I think it goes without saying that everyone involved with the club and all the fans deserved a lot more than how the season ended, so I’m really looking forward to being involved in the push to achieve that this year.”
Also re-signing is versatile youngster Robbie Hebson, who returned to Borough Park last summer following a spell with hometown side Penrith.
The Reds have previously announced that midfielder Brad Hubbold and defender Dan Wordsworth have committed to the club for the 2020/21 season.
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