Across the world, Roiger (Roiger 
) is a very rare masculine given name. Much more frequently, Roiger is the last name as well as the forename.
Mr, Kate, Kurt, Kris, Paul, Ross, Ryan, Dean, Dana, Davi, Dave, Dale, Dawn, Gary, Greg, Glen, Gwen, Lori, Lynn, Jana, Jack, Jose, Kara, Curt, Avis, Anna, Ms, Sue, Ann, Bob, Kai, Kim, Pat, Pam, Ron, Dan, Josh, Don, Joe, Tom, Val, Mary, Mark, Matt, Mike, Suzy, Alex, Alan, Jon, and John