No — no reliable public source currently confirms Ed Harris's left-handedness.

Ed Harris is an acclaimed American actor and director, known for his intense and versatile performances across film, television, and theater. Born in Englewood, New Jersey, he developed an early interest in sports before pursuing acting. He studied at the California Institute of the Arts and the University of Oklahoma, eventually making his mark in Hollywood.

Harris gained significant recognition for roles in films such as 'Apollo 13,' 'The Truman Show,' 'Pollock' (for which he received an Academy Award nomination for Best Actor), and 'A Beautiful Mind.' His career is marked by a consistent presence in both independent and mainstream productions, often portraying complex and authoritative characters.

Beyond his acting career, Harris has also ventured into directing, most notably with the biographical film 'Pollock' in 2000, which earned critical acclaim. He has received numerous awards and nominations throughout his career, including a Golden Globe Award and multiple Academy Award nominations.

In recent years, he has also gained popularity for his role as the Man in Black/William in the HBO science fiction series 'Westworld,' further solidifying his status as a prominent figure in contemporary entertainment. His dedication to his craft is evident in his diverse and impactful body of work.