Joseph Day may refer to:

• Joe Day (ice hockey) (born 1968), American ice hockey center
• Joe Day (footballer) (born 1990), English football goalkeeper
• Joseph Day (inventor) (1855–1946), inventor of the modern two-stroke engine
• Joseph A. Day (born 1945), Canadian senator
• Joseph P. Day (1874–1944), American real estate entrepreneur
• Joseph Day (Massachusetts politician), representative to the Great and General Court

See also[edit]

• Joseph Daye (born 1990), Australian rule footballer