Sam Johnston

Samuel Johnston or Sam Johnston may refer to:
 * Sam Johnston (Yukon politician) (born 1935), politician in the Yukon, Canada
 * Sam Johnston (wrestler) (born 1987), American professional wrestler better known as Sami Callihan
 * Sammy Johnston (born 1967), Scottish footballer
 * Samuel Johnston (1733–1816), American lawyer and statesman
 * SS Samuel Johnston, a Liberty ship
 * Samuel Johnston (footballer) (1866–1910), Irish footballer
 * Samuel Johnston (Waterview) (died 1924), Australian pioneer