No, unless youconsider directing being in it.
Although we do not see him clearly, Lucas makes a cameo in Revenge of the Sith as a blue faced lord
If you mean director-wise, the answer is George Lucas. The only films that George Lucas did not direct, but still was a part of, were The Empire Strikes Back and Return of the Jedi.
The sixth one that was made was The Revenge Of The Sith but the final one in the story is The Return Of The Jedi I think
George Lucas
Amanda played the voice of Tey How in Episode 1 and she portrayed Senator Terr Taneel in "Revenge of the Sith". Katie played Amee in "The Phantom Menace," (but she was credited as Jenna Green.) and played Senator Chi Eekway in "Revenge of the Sith." Jett played the Padawan Zett Jukassa in Revenge of the Sith.
All I know is that he made a brief appearance in "Revenge of the Sith." When Anakin is running inside that opera house to meet up with Palpatine, Lucas and his daughter Katie are in the background. Katie played Senator Chi Eekway in Revenge of the Sith and Lucas played a man who was talking to the Senator. There is a mythology that Lucas does a Hitchcook in each of his films (appears in the background somewhere) do'nt know if this is true.
5/4/2015: This is an edit by a fan to a previous answer which said no. Contrary to the previous answer, George Lucas did play a minor role on-screen. He played the cameo-part of Papanoida in Episode III: Revenge of the Sith.
He made it in 1421!!! thats impossible since George Lucas wasnt even ALIVE in 1421 anyway he didnt make it other people did and I think they made it in 2000 since that is when revenge of the sith came out.
During the opera scene in Star Wars: Episode III - Revenge of the Sith, Katie Lucas, the daughter of the director, George Lucas, makes an appearance. The movie was released in 2005.
Jett Lucas had a relatively minor role in Star Wars. Jett Lucas (born 1993) is the adopted son of George Lucas. He has cameos in both Attack of the Clones and Revenge of the Sith as a young Jedi Padawan named Zett Jukassa.
Star Wars: Revenge of The Sith released in 2005.
The first Star Wars book with Luke Skywalker in it was George Lucas' novelization of A New Hope written in the late 70's. If you are wondering about in the Star Wars timeline, the answer would be the Novelization of Revenge of the Sith.