Steve Jablonsky (born October 9, 1970) is an American music composer for film, television and video games. He has composed the soundtracks to the movies The Texas Chainsaw Massacre (2003), Steamboy (2004), The Island (2005), Transformers (2007), D-War (2007) and Transformers: Revenge of the Fallen (2009).

He has composed the sountracks to the video games Metal Gear Solid 2 (2001), Gears of War 2 (2008), Command & Conquer 3: Kane's Wrath (2008), The Sims 3 (2009), Prince of Persia: The Forgotten Sands (2010), Gears of War 3 (2011) and the Transformers games among others.

Jablonsky's Metal Gear Solid 2 soundtrack won the E3 award for 'Best Original Score' and he has won two BMI Film Music Award's for both The Texas Chainsaw Massacre and Transformers.