Lalu Prasad Yadav (Devanāgarī: लालू प्रसाद यादव) is an Indian politician from Bihar. He was the Minister of Railways from 2004 to 2009 in the ruling United Progressive Alliance (UPA) government, and the President of the Rashtriya Janata Dal political party. He is a Member of Parliament in the 15th Lok Sabha from the Saran constituency in Bihar.

He entered politics during his student days at Patna University, and he was elected a member of the Lok Sabha in 1977 as a Janata party candidate. At the age of 29 he was one of its youngest members of Parliament.

He is famous for his charismatic leadership and mass appeal, and has been criticized for caste-based politics. and the corruption cases against him.

Yadav served as the Chief Minister of Bihar from 1990 till 1997, when he resigned following escalating corruption charges in the Fodder Scam. From 1997 to 2005, with brief interruptions, his wife Rabri Devi was the Chief Minister. Her political opponents often accused her as having served as his "surrogate." His tenure as Chief Minister of the state has been criticized for lawlessness and has been termed as the Jungle Raj.