David Mulcahy may refer to:

• John Duffy and David Mulcahy, British serial rapists and murderers
• David Mulcahy (guitarist), New Zealand guitarist formerly of Jean-Paul Sartre Experience
• David Mulcahy (drummer), English drummer from band Razorlight

• Larry Sangma
• Larry Savage (American football)
• Larry Schneider
• Larry Schneider (disambiguation)
• Larry Schneider (musician)
• Larry Scott (American football)
• Larry Secede Kilgore
• Larry Semillano
• Larry Sewell
• Larry's Gym
• Larry Sharp
• Larry Sharpe
• Larry Sharpe (disambiguation)
• Larry Sharpe (politician)
• Larry Sheets (politician)
• Larry Sherman (actor)
• Larry's Hideaway
• Larry Siegert
• Larry Sievers
• Larry Slobodkin
• Larry Smith cinematographer
• Larry Smith (cinematographer)
• Larry Smith (trade unionist)
• Larry Sng
• Larry Sng Wei Shien