Nirj Deva, Sri Lankan-English politician
Thakur Artha Niranjan Joseph De Silva Deva Aditya, (born 11 May 1948), known as Nirj Deva, is a British politician. A member of the Conservative Party, he served as a Member of the European Parliament for South East England from 1999 to 2019. He was a Member of Parliament (MP) in the British House of Commons from 1992 to 1997, for the seat of Brentford and Isleworth.

Deva was born in Sri Lanka into a politically active family and was raised in Britain. He was the fifth Asian-born person to be elected a Member of the House of Commons, and in 1999 became the second so-born to be elected as a Conservative to the European Parliament which operates via a party list system. In November 2011 Deva became the European Conservatives and Reformists Group's candidate for President of the European Parliament, following three UN-related roles, representing the European Union, in the 2005 to 2006 period.