Ain Bahadur Mahar is a Nepalese politician currently a member of Parliament (MP) for Bajhang 1 from the CPN (UML). He is currently serving as the Chief Whip of CPN (UML).

Early life and education Mahar completed his SLC from Suni Pipalchaur High School. He completed his master's degree from Tri-Chandra Multiple Campus and bachelor's degree from Amrit Campus. He is currently pursuing an MPhil in Peace, Conflict and Development.

Political career Mahar started his political career with All Nepal National Free Students Union from Askal Campus in 1998. He became a central member at the 19th session of the ANNFSU held in Pokhara in 2007, a secretariat member in 2009, vice-president in 2013. He was also the president of ANNFSU for Karnali and Sudurpashchim. Mahar was the Kathmandu Valley in-charge of the Youth Force. He was elected as the president of the All Nepal National Free Students Union in May 2019.

He contested the 2022 general election from Bajhang 1 but lost. He was elected as a central committee member of CPN (UML) at the party's 11th convention. He was elected from Bajhang 1 at the 2026 general election.

Legal issues Mahar was arrested in connection with a shootout in Tri-Chandra College in 2009. He was arrested after a case was filed against him for defamation and character assassination in August 2025, but was released on bail in December 2025

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