Vaidyanathan Thirunavukkarasu (11 January 1926 – 5 November 2008), popularly known as V. T. Arasu, was a Singaporean journalist, civil servant, editor, author and Tamil enthusiast.

In tandem with this portfolio, under the guidance of the community leader and editor G. Sarangapany, Arasu played a prominent role in the cultural and educational movements of the 1950s and 1960s.

In the 1950s and 1960s, he played a significant role in developing the cultural and educational scene in various ways, such as encouraging creative writing.

Arasu left Tamil Murasu in 1958 to join the civil service but returned in 1989 as its Chief Editor at the request of its owners, the G. Sarangapany family.

When he returned to Tamil Murasu as its chief editor, that he would begin to shape what many now call his enduring legacy: transforming a failing community newspaper into a relevant and thriving publication.

As President of the Tamil Language and Cultural Society, from 1984 to 1998, he invited young professionals to join the organization and encouraged them to play a greater role in the community.

While Arasu's involvement with Indian community issues and promotion of Tamil extended throughout the last 50 years of his life, he also devoted considerable time and effort on matters of common interest to all Singaporeans.

The National University of Singapore's Centre for the Arts honoured him for his services at the conference on “Tamil in the International Arena.” in January 2002 Arasu died at the age of 83, on 4.11.2008 from complications linked to pancreatic cancer.