The game, Feb. 14 in Dallas, will be Kaman's All-Star debut.
He is averaging a career-high 20.2 points and 9.0 rebounds while shooting 50 percent from the field.
Kaman is the first Clippers player to be chosen to the All-Star Game since Elton Brand in 2006.
Roy, in his fourth season with the Blazers, made the All-Star team as a reserve for the third straight season.
Information from The Associated Press contributed to this report.