Stephen or Steven Nash may refer to:

Sports

• Stephen Nash (rugby league) (born 1986), English rugby league footballer
• Stephen Nash (swimmer) (born 1956), British butterfly swimmer
• Stephen Nash (volleyball) (born 1985), Canadian volleyball player
• Steve Nash (born 1974), Canadian basketball coach and former player
• Steve Nash (rugby league) (born 1949), English rugby league footballer

Others

• Stephen Nash (diplomat) (born 1942), former British Ambassador to Albania, Georgia and Latvia
• Stephen D. Nash (born 1954), English wildlife artist
• Stephen P. Nash (1821–1898), American lawyer
• Steven G. Nash (1938-1991), American politician