Must Be Pop Masterlist
- Kaki King - musician
- Kalan Porter - musician, Canadian Idol 2, CANNOT BE PORTRAYED PER CELEB'S REQUEST
- Kanye West - musician
- Karen Elson - model, musician
- Karen Gillan - actress
- Kari Lehtonen - athlete, hockey, Dallas Stars
- Karl Alzner - athlete, hockey, Washington Capitals
- Kat Dennings - musician
- Kat Von D - TV personality
- Kate Bosworth - actress
- Kate Moennig - actress
- Kate Moss - model
- Kate Nash - musician
- Kate Walsh - actress
- Kate Winslet - actress
- Katerina Graham - actress
- Katie Hoff - athlete, swimmer
- Katie Holmes - actress
- Katy Allen - other - family member, wife of Kris Allen
- Katy Perry - musician
- Kayla Ewell - actress
- Kayslee Collins - actress, model
- Keeley Hazell - model
- Keira Knightley - actress
- Keith Ballard - athlete, hockey player, Vancouver Canucks
- Keith Murray - musician, We Are Scientists
- Kellan Lutz - actor
- Kelli Garner - actress
- Kelli Stack - athlete, hockey, US National Women's Team
- Kelly Clarkson - musician, American Idol 1 - CANNOT BE PORTRAYED WITHOUT MODERATOR'S PERMISSION
- Kelly Shaddix / Kelly Dick - wife of Jacoby Shaddix / Coby Dick, CANNOT BE PORTRAYED WITHOUT A MODERATOR'S PERMISSION
- Kemp Muhl - model
- Kendra Jade - model, actress
- Kenny Chesney - musician
- Kevin Bieksa - athlete, hockey player, Vancouver Canucks
- Kevin Jonas - musician, The Jonas Brothers, CLOSED, CHOOSING REPLACEMENT UNTIL OCTOBER 4
- Kevin McHale - actor
- Kevin Porter - athlete, hockey player, Colorado Avalanche
- Kevin Zegers - actor
- Kianna Alarid - musician, Tilly and the Wall
- Kieran Culkin - actor
- Kip Pardue - actor, CANNOT BE PORTRAYED PER CELEB'S REQUEST
- Kirk Maltby - athlete, hockey player, Detroit Red Wings
- Kirsten Dunst - actress
- Kris Allen - musician
- Kris Russell - athlete, hockey player, Columbus Blue Jackets
- Kris Versteeg - athlete, hockey player, Toronto Maple Leafs
- Kris Williams - television personality, investigator with TAPS on Ghosthunters
- Kristen Bell - actress
- Kristen Stewart - actress
- Kristian Huselius - athlete, hockey player, Columbus Blue Jackets
- Kristin Kreuk - actress
- Kyle Turris - athlete, hockey player, Phoenix Coyotes
- Kyle Wellwood - athlete, hockey player, Vancouver Canucks