John Block

John Block may refer to:


 * John Block (South African politician) (born 1968), South African politician
 * John Nicolaas Block (1929–1994), Dutch aviation pioneer
 * John Rusling Block (born 1935), United States Secretary of Agriculture
 * John Block (basketball), (born 1944), American basketball player
 * John Block (filmmaker) (born 1951), American filmmaker
 * Jack Block (1924–2010), American psychology professor
 * John Block (New Mexico politician), American politician