Pillai may refer to:
Pillai (Kerala title), a title of nobility used by Nairs of Kerala, India Pillai of Pallichal, a title of the order of nobility in the former Travancore monarchy of India Pillai (surname), a surname used by different communities in Kerala, Tamil Nadu, and Sri Lanka Pillai (Tamil surname), a Tamil surname in Tamil Nadu and parts of Sri Lanka, traditionally associated with the Vellalar community See also Pilai, a Finnish bagpipe