Shiva Kumar (born 20 September 1989) also known as Shivaji Dev is an Indian actor working in Tamil language films, who made his debut in Venkatesh's Singakutty (2008).

Shivaji Dev made his debut, credited as Junior Sivaji, in Venkatesh's masala film Singakutty (2008), starring alongside Gowri Munjal.

He garnered good reviews for his on-stage performances, including a role in The Importance of a Hat, where he played the role of an English butler, while also directing plays titled Merry Christmas and Growing up as a part of the Short & Sweet Theater Festival held in Chennai, India.

The film had a low key release in December 2012 and attracted negative reviews, though a critic noted Sivaji "shows potential".

[6][7] In 2014, the actor was seen in AVM Productions' experimental drama film Idhuvum Kadandhu Pogum, where he played a widower.