Thaddeus Rowe "Thad" Luckinbill (born April 24, 1975) is an American actor best known for playing J.T. Hellstrom on the CBS soap opera The Young and the Restless for eleven years (from August 1999 to November 2010). Luckinbill's wife and co-star, Amelia Heinle, announced on September 24, 2010 that Luckinbill would not be renewing his contract because he wanted to pursue other acting roles.