By-elections were held in Liechtenstein on 16 March 1930.

[1] By-elections were called following the resignation of the four Christian-Social People's Party members of the Landtag.

[2] The VP believed that general elections should be held in 1930 because the Landtag elected in 1928 is only continuing the term that started after the April 1926 general elections.

[2] The result was a victory for the ruling Progressive Citizens' Party, which won all four vacant seats in the Landtag.

[2] The result led to a debate over the introduction of proportional representation, which took place in 1939.