Knicks center Mitchell Robinson is changing his number from 26 to 23 to honor two dead high school classmates.

The Knicks released their Summer League roster and Robinson is expected to play at least two games. The first practice is Tuesday in Las Vegas.

Robinson, the No. 36 pick from last year’s draft who went on to earn Second-Team All-Rookie honors, wore 23 in high school but it was taken by Trey Burke last season.

In a Q&A with Steve Serby late last season, Robinson explained why he wore 23 in high school.

“It really represented my friend [Jacquez], one of my best friends that I grew up with,’’ Robinson told Serby. “He passed away (in a car accident). He wore 2, and then my other friend [Demarcus] that also passed away ’cause he got shot, he was 3. I just put their numbers together.”

Meanwhile, Robinson’s rookie teammate last season, Kevin Knox, will go by Knox II this season. His father, Kevin Knox, was drafted by the Buffalo Bills after winning a title with Charlie Ward at Florida State.

Robinson and Knox dominated Summer League last season. Knox averaged 21.3 points and 6.5 rebounds. Robinson averaged a double-double (13 points, 10.2 rebounds, four blocks).

The Knicks open July 5 with Robinson’s hometown New Orleans Pelicans and Zion Williamson.