This is a list of string quartets by Wolfgang Amadeus Mozart.
String Quartet No. 1 in G major, K. 80/73f String Quartet No. 2 in D major, K. 155/134a String Quartet No. 3 in G major, K. 156 (K. 134b) String Quartet No. 4 in C major, K. 157 String Quartet No. 5 in F major, K. 158 String Quartet No. 6 in B major, K. 159 String Quartet No. 7 in E major, K. 160 (K. 159a) String Quartet No. 8 in F major, K. 168 String Quartet No. 9 in A major, K. 169 String Quartet No. 10 in C major, K. 170 String Quartet No. 11 in E major, K. 171 String Quartet No. 12 in B major, K. 172 String Quartet No. 13 in D minor, K. 173 String Quartet No. 14 in G major, K. 387 String Quartet No. 15 in D minor, K. 421/417b String Quartet No. 16 in E major, K. 428/421b String Quartet No. 17 in B major, K. 458 String Quartet No. 18 in A major, K. 464 String Quartet No. 19 in C major, K. 465 String Quartet No. 20 in D major, K. 499 String Quartet No. 21 in D major, K. 575 String Quartet No. 22 in B major, K. 589 String Quartet No. 23 in F major, K. 590