Frank Eric Jaenicke (23 August 1892 – 2 February 1951) was a Co-operative Commonwealth Federation member of the House of Commons of Canada.

He was born in Germany and became a barrister by career.

Jaenicke was an unsuccessful 1938 provincial election candidate for the Saskatchewan Co-operative Commonwealth Federation in the constituency of Kerrobert-Kindersley.

Jaenicke was defeated in the 1949 election by Fred Larson of the Liberal party.

This article about a Saskatchewan politician is a stub.