Askar Mamin was born in Tselinograd (modern day Astana) in 1965.
He graduated from the Tselinograd Institute of Civil Engineering and Plekhanov Russian Academy of Economics majoring in civil engineering and economy. He began his career as an adjuster at Tselintyazhstroy group of enterprises.
From 1996 to 2008 he served as the first deputy akim (mayor) of Astana, vice minister of transport and communications, first vice minister of industry and trade, minister of transport and communications, akim (mayor) of Astana.
In 2008-2016, he was the president of the Kazakhstan Temir Zholy National Company.
From Sep. 9, 2016, he had been the First Deputy Prime Minister of the Republic of Kazakhstan.
On Feb. 25, 2019, by the Decree of the President of the Republic of Kazakhstan, Askar Mamin was appointed the Prime Minister of the Republic of Kazakhstan.
He was awarded the Yeren Enbegi Ushin (For Labour Merit) medal (1998), Order of Qurmet (Honour) (2006), the Barys Order of the second degree (2011), Order "Qazaqstan Respublikasynyn Tungysh Presidenti - Elbasy Nursultan Nazarbayev" (2020).