Eric Marc Alexander Smaling (born 18 August 1957 in Amsterdam) is a Dutch politician and agronomist. As a member of the Socialist Party (Socialistische Partij) he has been an MP since 14 May 2013, replacing Manja Smits (initially temporarily, definitively since 15 April 2014). From 2007 to 2013, he was a Senator; he is temporarily replaced by Arda Gerkens.
Smaling studied agronomy at Wageningen University and Research Centre and specialised in soil science and manure. He was also a professor at this university. Since 2004, he has been a professor at ITC Enschede.
He is partner of children's writer Rindert Kromhout and resides in Weesp.