Salisbury by-election may refer to one of many parliamentary by-elections held for the British House of Commons constituency of Salisbury (UK Parliament constituency), including three in the 20th century, which are:
1869 Salisbury by-election 1931 Salisbury by-election 1942 Salisbury by-election 1965 Salisbury by-election
See also Salisbury (UK Parliament constituency) Salisbury District Council elections