Joseph Cottet (14 April 1923 – 23 May 2019) was a Swiss politician.
Born in Bossonnens, he served as a member of the Grand Council of Fribourg, representing the Party of Farmers, Traders and Independents during the period 1957–71.
In 1983, Cottet was elected to the National Council as a member of the People's Party, serving until 1987.