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