Colin Stephen de Grussa (born 17 April 1973) is an Australian politician.
He was elected to the Western Australian Legislative Council at the 2017 state election, as a National Party member in Agricultural Region.
His term began on 22 May 2017.
De Grussa previously served as state president of the National Party.In 2014, de Grussa was awarded a Nuffield Scholarship for research into how farmers interact with government for the benefit of their industry.