Gary Alan Sinise (born March 17, 1955) is an American actor and film director. During his career, Sinise has won an Emmy and a Golden Globe Award and was nominated for Palme d'Or and an Academy Award. In 1992, Sinise directed the film and played the role of George Milton in the movie adaption of Of Mice and Men. Sinise was nominated for the Academy Award for Best Supporting Actor in 1994 for his role as Lieutenant Dan Taylor in Forrest Gump. He won a Golden Globe award for Best Actor in a TV Movie or Miniseries for his role in Truman. In 1996, he played a corrupt police officer in the Ron Howard dramatic hit Ransom. In 1998, Sinise was awarded an Emmy Award for Outstanding Lead Actor in a Miniseries or Movie for the television film George Wallace, a portrayal of the late Governor George C. Wallace, Jr., of Alabama.

Sinise currently stars in CBS's CSI: NY as Detective Mac Taylor. He recently narrated a biography for Navy Seal and Medal of Honor recipient Petty Officer 2nd Class Michael A. Monsoor at the Republican National Convention in support of John McCain's candidacy for President of the United States of America. In December 2008 he was awarded the Presidential Citizen Medal, the second highest civilian medal awarded to U.S. civilians. He received the medal from President George W. Bush for his humanitarian contributions to Iraqi school children and his involvement in the USO. He is the executive producer of Brothers at War, the award winning documentary about an American military family and the Iraq war.

Sinise was born in Blue Island, Illinois, the son of Millie (née Alsip) and Robert L. Sinise, who was a film editor. He is of half Italian ancestry. He attended Highland Park High School, in Highland Park, Illinois, and continued his education at Illinois State University, in Normal, Illinois. In 1974, Sinise and two friends, Terry Kinney and Jeff Perry, founded the Steppenwolf Theatre Company. Since its founding, Steppenwolf has showcased the talents of such notable actors as Joan Allen, Kevin Anderson, Gary Cole, Ethan Hawke, Glenne Headly, John Mahoney (Fraser's dad on TV hit "Fraser"), John Malkovich, Laurie Metcalf, Martha Plimpton, Jim True-Frost and most recently William Petersen. At Steppenwolf, Sinise honed his acting and directing skills and worked on more than thirty of the company's productions.