Mohammad Nizar bin Jamaluddin (born 17 March 1957) is a Malaysian politician who is the current Member of the Perak State Legislative Assembly for Sungai Rapat.
He was the member of the Parliament of Malaysia for the Bukit Gantang constituency in from 2009 to 2013.
Nizar is a member of National Trust Party (AMANAH).
He also previously served as Menteri Besar of Perak between 2008 and 2009, before being unseated after a constitutional crisis.