Rik Arend Janssen (born 30 December 1957 in Arnhem) is a Dutch politician for the Socialist Party (SP) and former businessman. As a member of the Socialist Party (Socialistische Partij) he was a temporary MP from 11 January till 14 April 2011, replacing Sadet Karabulut, who was on maternity leave. He focused on matters of security, judiciary, immigration and political asylum. Since 27 April 2011 he has been a member of the States Deputed of the province of South Holland.
He was installed as a member of the Senate on 11 June 2019.