A-class submarine

A class submarine may refer to one of these classes of submarine:


 * A class submarine (1903), a class of 13 submarines of the Royal Navy that served in World War I
 * Danish A class submarine, a class of six built for the Royal Danish Navy, 1911–1914
 * Norwegian A class submarine, a class built for the Royal Norwegian Navy in 1913
 * American Holland class submarine, also later known as Soviet A class submarine, submarines launched in 1916
 * Spanish A class submarine, a class of three launched in 1917


 * Plunger-class submarine, a class of seven United States Navy submarines built before World War I; also known as the "A class"
 * Amphion-class submarine (also called the Archeron class), a class of sixteen submarines of the Royal Navy that served in World War II; also known as the "A class"