Mulayam Singh Yadav (born 22 November 1939) is an Indian politician from Uttar Pradesh and the founder-patron of the Samajwadi Party.
He served for three non-consecutive terms as the Chief Minister of Uttar Pradesh from 1989 to 1991, 1993 to 1995, and 2003 to 2007 respectively and also served as the Minister of Defence from 1996 to 1998 in the United Front government.
He has also served as the Member of Parliament in the Lok Sabha from Azamgarh between 2014 and 2019.
He is currently the Member of Parliament, representing the constituency of Mainpuri in the lower house.