The 2007 Ijok by-election was held on 28 April 2007. The seat of Ijok in the State Legislative Assembly of Selangor, Malaysia, fell vacant after the death of the incumbent, K. Sivalingam, on 4 April 2007 from a heart attack. Sivalingam was a member of the state executive council as well as the deputy chairman of the Selangor state Malaysian Indian Congress (MIC), a component party of the ruling Barisan Nasional (BN) coalition. The by-election was won by the BN candidate K. Parthiban, with a 1,850-vote majority over the opposition candidate, Khalid Ibrahim.