German submarine U-73

U73 stands for:

• HMAS Warrego ( U73 ), a military ship of the Royal Australian Navy
• The line U73 in the network of Düsseldorf Stadtbahn; see list of Düsseldorf Stadtbahn lines

U 73 is:

• SM U 73, U- boat of the German Imperial Navy in World War I
• U 73 ( Kriegsmarine ), a submarine of the German Wehrmacht in World War II

• Disambiguation
• Abbreviation