Karupaiya s/o Muthusami (Tamil: கருப்பையா முத்துசாமி, romanized: Karuppaiyā muttucāmi, 4 February 1953 – 16 November 2022) was a Malaysian politician who served as the Member of Parliament (MP) for Padang Serai from May 2018 to his death in November 2022.

He was also patron of both the Malaysian Indian Armed Forces (PERIM) and the Former Malaysian Armed Forces as well as member of the board of the Institute of Postgraduate Studies (IPS) of the Bukit Mertajam Tamil School.

[2][3] On 16 November 2022, Karupaiya died from a heart attack while campaigning for the 2022 general election.

He was seeking the second term as the Padang Serai MP by contesting in the election representing PH and PKR after serving the first from 2018 to his death in 2022 for four years.

He explained that the EC had received an Election Writ by the Managing Officer in Padang Serai over the death of Karupaiya.