Siva had seven steals in a Big East Tournament semifinal game on Friday night, passing the old mark set by Darrell Griffith.
"It's really nice because there have been a lot of great players at Louisville," Siva said after the game. "I didn't know about it but it's really nice.
"I was more worried about getting the win."
The senior point guard from Seattle has 72 steals this season and now has 236 for his career. Griffith had 230 during his career.
"When you realize the talent we have had at Louisville, one of the greatest traditions in all of college basketball, U of L coach Rick Pitino said. "That's saying something because Denny (Crum) had so many great athletes, so many great players. I say this and I keep repeating it.
"The two greatest people I've ever coached in my life were Billy Donovan and Peyton Siva, just as people, and then you match the fact that they were both great point guards. So, I've been very lucky."
Siva laughed when it was pointed out he broke the record early in the second half when a Notre Dame offensive player lofted the ball in the air, right to Siva.
"It's just great to be in that record book," Siva said. "There are a bunch of good guys in the Louisville record books, to be part of that is great."
Siva also tied the Big East Tournament record for steals in a single game with seven. He becomes the 11th player to record seven steals in a game, but the first since U of L's Terrence Williams did it in 2009 against Syracuse in the final.
But Siva did more than get steals. He had 12 points – his eight straight Big East tourney game in double figures – and had six assists and three rebounds.
"The thing that matters most is we got the win," Siva said.