Khishgeegiin Nyambaatar (, born 4 June 1978) is a Mongolian politician currently serving as the 36th Mayor of Ulaanbaatar since October 2023, previously having been Minister of Justice and Internal Affairs. He was elected as a member of the State Great Khural in 2016 and 2020.
In December 2023, as the Mayor of Ulaanbaatar, Nyambaatar was tasked with overseeing the construction and completion of the city's metro system, originally planned for completion by 2020.
Nyambaatar was born on 4 June 1978 in Ulaanbaatar, the capital of the Mongolian People's Republic, and graduated from the 48th Secondary School in 1996.
He graduated from Orkhon University with a Bachelor's degree in legal studies in 2000 and a Master's degree in pedagogy in 2002.
In 2009, he was the legal advisor of Songinokhairkhan District, one of the 9 municipal districts of Ulaanbaatar. From 2012 to 2016, he served as the chairman of the Citizens' Representatives Leaders' Khural in Songinokhairkhan.
In the 2016 parliamentary election, he was elected as a member of the State Great Khural from the 76th constituency in Songinokhairkhan. The Mongolian People's Party (MPP) won 65 seats out of 76 in the State Great Khural.
In late December 2018, a corruption scandal kick-started the 2018 anti-corruption protests, which demanded the resignation of MPP parliamentary speaker Miyeegombyn Enkhbold and other key officials, from both the ruling MPP and the opposition Democratic Party (DP). Enkhbold and other groups of politicians were accused of conspiring to raise 60 billion MNT (approximately US$23 million) by selling off government positions. Nyambaatar, along with MPP MPs Luvsannamsrain Oyun-Erdene, Tumurbaataryn Ayursaikhan, DP MP Luvsanvandangyn Bold, and independent MP Jalbasurengiin Batzandan, joined the popular demonstrations, boycotted parliamentary sessions, and submitted letters calling for speaker Enkhbold to resign. The cross-party group of politicians became informally known as the "Fair Five" (). Enkhbold would resign on 14 February 2019.
Nyambaatar was re-elected to the State Great Khural from the same municipal district in the 2020 parliamentary election. The MPP yet again won a supermajority, where the party controlled 62 out of 76 seats in the State Great Khural. After the 2020 elections, he was appointed as the Minister of Justice and Internal Affairs and a part of then-Prime Minister Ukhnaagiin Khürelsükh's second cabinet, which lasted until the January 2021 protests. Khürelsükh resigned after 2 days of protests, and was succeeded by Nyambaatar's long-time political ally Luvsannamsrain Oyun-Erdene.
On 12 October 2023, Nyambaatar was appointed by prime minister Oyun-Erdene to become the 36th Mayor of Ulaanbaatar after the previous mayor, Dolgorsürengiin Sumyaabazar, resigned from his position due to a scandal involving the reform of the Ulaanbaatar public transport fleet that was exposed as embezzling public funds. Prior to the 2024 parliamentary election in May 2024, Nyambaatar was elected to succeed former mayor Sumyaabazar as the next Chairman of the Mongolian PeopleâÂÂs Party of the Capital City during the Capital's Party Congress. He was reappointed as Mayor of Ulaanbaatar after the MPP declared a decisive victory in the 2024 local elections, winning 40 of 45 seats in the Citizens' Representatives Khural of the Capital City.