All around the world, Maccartney (Maccartney 
) is a very rare masculine given name. Much more prevalently, Maccartney is the last name as well as the forename.
Ms, Gary, Gail, Lisa, Jack, Jami, Joss, John, Jean, Jill, Todd, Tina, Eric, Emma, Earl, Maria, Molly, Shane, Shawn, Susan, Alice, Allan, Doug, Chris, Dawn, Ryan, Mac, Rob, Ron, Don, Liz, Jan, Jon, Jim, Tom, Tim, Ian, Mary, Mark, Alex, Alan, Anna, Cary, Bill, Paul, Ruby, Ruth, Dave, and Chylo