Vaithilingam is a family name. People with this name include:
Daisy Vaithilingam (1925–2014), Singaporean social worker M. A. Vaithyalingam, Indian politician R. Vaithilingam, Indian politician V. Vaithilingam, Indian politician Vaithilingam Sornalingam (1949–2001), better known as Shankar (Tamil militant)