Throughout the world, Hainen (Hainen 
) is an extremely rare dominantly girly, but seldom boy's given name. More frequently, Hainen is the last name as well as the forename.
Mr, Craig, Bryan, Karen, Robin, Debra, Diane, Donna, Gregg, Lance, James, Jerry, Julia, Ellen, Frerd, Andrew, Braden, Pamela, Philip, Ronald, Daniel, Glenda, Clark, Carol, Sally, Fred, Al, Sue, Dan, Jon, Joe, Jen, Jim, Marc, Mary, Mark, Lauren, Cody, Phil, Rudy, Ryan, Dani, Gene, Leah, Lisa, Lori, John, Joel, Karl, and Janice