Is Mark hamill dead

He died at age 57 returning from a Surfing trip with his son , Griffin. Griffin did not die survived , I think

Another Answer:

Mr. Hamill is alive and well as of this writing.

NO HE IS NOT DEAD!!!

He defintly NOT dead. he has done the voise of joker in batman arkham asylum and there is a sequal coming out. so no he is not dead. :)