Mangala Devi Singh (Nepali: मंगलादेवी सिंह) was a pioneer feminist and prominent democratic right activist of Nepal.

[2] Her husband was the leading Nepali Congress Leader Ganesh Man Singh.

In 1948 Mangala Devi Singh led a delegation to Prime Minister Padma Shumsher to demand education, employment and voting rights for women.

while another faction, led by Kamaksha Devi held the belief that only a radical change could provide women with their rights, this division culminated later that year when a decision to protest the arrival of First Indian Prime Minister Jawaharlal Nehru caused Mangala to lose her support.

This act lead to her removal as president and replacement with Kamaksha Devi.