David Salmon may refer to:

• David Salmon (racing driver), former British racing driver
• David Salmon (tribal chief) (1912–2007), Alaska native and Episcopalian priest
• David A. Salmon, career government functionary

• PSEN2 (gene)
• Psenocerini
• Psenocerus
• Psenocerus supernotatus
• Psenopsis
• Psephis gomalis
• Psephis ministralis
• Psephis myrmidonalis
• Psephochelys
• Psephocracy
• Psephocrita melanodoxa
• Psephologa
• Psephopaectes
• Psephosauriscus
• Psephotellus chrysopterygius
• Psephotellus dissimilis
• Psephotellus pulcherrimus
• Psephotellus varius
• P Se PM Tak
• P:SER
• P:SERER
• PS Erin's Isle
• P. serrata
• P. sertulosa
• P. Servilius Priscus Structus