David Warner may refer to:

• Dave Warner (musician) (David Robert Warner, born 1953), Australian rock musician, author and screenwriter
• Dave Warner (strongman), strongman competitor from Northern Ireland
• David Warner (actor) (born 1941), British actor
• David Warner (cricketer) (born 1986), Australian international cricketer
• David Bruce Warner (born 1970), South African alpine skier
• David William Warner (born 1941), former Speaker of the Ontario legislature