- Richard Knight
- Richard Knight
- Richard Knott
- Richard Kobor
- Richard Kohlberger
- Richard Kolodziejcyk
- Richard Kramer
- Richard Krantz
- Richard Kriedemann
- Richard Kromka
- Richard Labowe
- Richard Lafferty
- Richard Lamb
- Richard Langan
- Richard Latner
- Richard Law
- Richard Lawson
- Richard Le Page
- Richard Learwood
- Richard Ledgett
- Richard Lee
- Richard Lee
- Richard Leggio II
- Richard Lehrer
- Richard Lemanski
- Richard Lenane
- Richard Lenz
- Richard Lever
- Richard Levernier
- Richard Levy
- Richard Lewin
- Richard Lewis
- Richard Lewis
- Richard Limardo
- Richard Lin
- Richard Lipkin
- Richard Liu
- Richard Lobo
- Richard Locke
- Richard Lowe