Sir Colin Norman Thornton-Kemsley, was a Conservative and National Liberal politician in the United Kingdom. He was the Member of Parliament (MP) for Kincardine and Western Aberdeenshire from 1939 to 1950, and for North Angus and Mearns from 1950 until his retirement at the 1964 general election.

The National Liberal Party, known until 1948 as the Liberal National Party, was a liberal political party in the United Kingdom from 1931 to 1968. It broke away from the Liberal Party on the issue of abandoning Free trade and supporting protectionism, and later co-operated and merged with the Conservative Party.