Sivakumar s/o Varatharaju Naidu (Tamil: வ. சிவகுமார், romanized: Va. Civakumār; born 5 December 1970), better known as V. Sivakumar, is a Malaysian politician who has served as the Member of Parliament (MP) for Batu Gajah since May 2013. He served as the Minister of Human Resources in the Unity Government administration under Prime Minister Anwar Ibrahim from December 2022 to December 2023 and Member of the Perak State Legislative Assembly (MLA) for Tronoh from March 2008 to May 2013. He also served as Speaker of the assembly from April 2008 to May 2009. He is a member of the Democratic Action Party (DAP), a component party of the Pakatan Harapan (PH) and formerly Pakatan Rakyat (PR) coalitions. He has also served as the Deputy Secretary-General of DAP since November 2017. He was also the sole Cabinet minister of the Indian ethnicity prior to the 2023 cabinet reshuffle.

Prior to his political career, he obtained a Bachelor's degree in Economics from the University of Malaya and a professional qualification in insurance administration from the Life Office Management Association in the United States.

Sivakumar was born in 1970 to M. Varatharaju and S. Karunakari in Perak, Malaysia. He received his Bachelor's degree in Economics with a specialization in Public Administration from the University of Malaya in 1994. In 2000, he obtained an Associate degree in Insurance Agency Administration from the Life Office Management Association in the United States.

Sivakumar entered politics in 1997, once serving as political secretary to Ipoh Barat MP M. Kulasegaran, before winning the Tronoh state seat in the 2008 general election, defeating Lee Kim Choy with a majority of 2,571. Sivakumar holds a Bachelor's in Legal Philosophy and a Master's in Business Administration. Sivakumar was nominated speaker by Pakatan Rakyat and while Barisan Nasional nominated Junus Wahid, the incumbent, to continue as speaker. A fired up debate ensued between the two sides, and Sivakumar was elected speaker through secret ballot on 25 April 2008 at 4.05pm with 31 votes, against Junus' 28 votes. Hee Yit Foong was appointed deputy speaker soon after.

In the 2013 general election, Sivakumar contested and won the parliamentary constituency of Batu Gajah in Perak.

Sivakumar began his political career in 1997 when he joined the Democratic Action Party (DAP). In 2008, he ran for the Parliament seat of Batu Gajah in Perak and was elected as a first-time member of parliament. He subsequently became the Political Secretary to the Minister of Human Resources, M Kulasegaran.

He is the first ethnic Indian to become the speaker of a Malaysian legislature, succeeding Junus Wahid, the previous speaker of the State Assembly from United Malays National Organisation (UMNO) and Barisan Nasional (BN).

Sivakumar's tenure as speaker was shrouded in controversy surrounding his handling of the 2009 Perak constitutional crisis, where the opposition Barisan Nasional managed to obtain three defections from the elected government, enabling Barisan Nasional under Zambry Abdul Kadir to form the new government. Sivakumar had the members of the disputed new Barisan Nasional cabinet suspended for contempt of assembly. Many blogs, particularly Malaysia Today run by the influential royal Raja Petra Kamaruddin, and news portals in cyberspace praised him for his resilience in insisting for an official vote of no-confidence against the incumbent Pakatan Rakyat government of Mohammad Nizar Jamaluddin before taking charge. The mainstream media of Malaysia criticised him for being partisan and biased against Barisan Nasional.