Arjun is the nephew of a famous Telugu actor Chiranjeevi. He is also the grandson of the Telugu comedy actor Allu Ramalingaiah. His cousin Ram Charan Teja is also a young and upcoming Tollywood actor. He has two siblings - an older brother named Allu Venkatesh, and a younger brother named Allu Sirish. He now lives in Hyderabad, Andhra Pradesh with his family. He is a good dancer in tollywood like his uncle.
Allu Arjun's debut as an actor was in a Telugu movie named Daddy which was produced by his father. His first starring role was in Gangotri, directed by K.Raghavendra Rao . His second film Arya, released in 2004, Arjun claims it to be his first major hit. Arjun's third film Bunny was released in 2005 and his fourth film Happy, which was released in 2006. The film managed to make a decent profit in the Indian movie scene in the U.S.
In 2007, his fifth film, Desamuduru, directed by Puri Jagannadh, proved to be a box office hit and the first hit of the year in Tollywood. This movie grossed Rs.19 crores and a share of Rs.15.50 crores in the first week of its release. This opening remains his highest grossing opening so far in his career. In the same year, he also made a guest appearance in his uncle, Chiranjeevi's film, Shankardada Zindabad.
His sixth film Parugu was released on May 1st, 2008. Produced by successful producer Dil Raju, it was directed by Bhaskar. Sheela played the female lead in the movie and Prakash Raj played another major role. This film opened to a mixed talk but later went on to run 100 days successfully. It brought good recognition to Allu Arjun as an actor too. He entertained his audience with his dances and acting skills.
He is also a well known star in Kerala. All of Allu Arjun's movies except Gangotri were dubbed into Malayalam. Desamudrudu was renamed to Hero and Parugu was renamed to Krishna when dubbed. This helped him gain some popularity in the state of Kerala.