- John Krasinski (2 movies)
- John L. Armijo (1 movie)
- John Lacy (2 movies)
- John Lafayette (2 movies)
- John Landis (4 movies)
- John Larroquette (1 movie)
- John Lavelle (3 movies)
- John Lawrence (1 movie)
- John Le Mesurier (1 movie)
- John Leary (1 movie)
- John Lebar (1 movie)
- John Lee Hooker (1 movie)
- John Legend (1 movie)
- John Leguizamo (5 movies)
- John Ley (1 movie)
- John Lithgow (6 movies)
- John Livingston (1 movie)
- John Lobato (2 movies)
- John Locke (2 movies)
- John Lordan (1 movie)
- John Louie (1 movie)
- John Lucantonio (1 movie)
- John Luder (1 movie)
- John Lummiss (1 movie)
- John MacDonald (1 movie)
- John Macey (1 movie)
- John Maclaren (2 movies)
- John MacMillan (2 movies)
- John Madison (1 movie)
- John Magaro (1 movie)
- John Mahon (1 movie)
- John Mahoney (3 movies)
- John Malkovich (13 movies)
- John Manca (1 movie)
- John Marshall Jones (1 movie)
- John Mason (1 movie)
- John Matuszak (1 movie)
- John Maurice (1 movie)
- John McCain (1 movie)
- John McCann (1 movie)
- John McConnell (5 movies)
- John McCurry (1 movie)
- John McGiver (1 movie)
- John McGregor (1 movie)
- John McLaughlin (1 movie)
- John McLiam (1 movie)
- John Merical (1 movie)
- John Michael Bolger (1 movie)
- John Michael Graham (1 movie)
- John Michael Higgins (5 movies)