Olaf Alfred Hoffstad (18 March 1865 – 15 September 1943) was a Norwegian botanist, writer, school principal and Conservative politician. Born in the mid-Norwegian city of Stjørdal to a mercantile family, he initially embarked on an educational career. Having taught at girls' schools across the country in the early 1890s, he was permanently employed at two universal schools in Sandefjord, a city whose political life he influenced in the latter part of his life.