Mark Levitt Batshaw (born 19 September 1945) is a Canadian-born physician, medical researcher and academic administrator.

He is known for his research into urea cycle disorders and gene therapy, and is the author of the classic textbook "Children with Disabilities".

Batshaw manifested dyslexia and attention deficit hyperactivity disorder as a child at a time where there were limited special education services or medication for treatment.

During his clinical fellowship at the Kennedy Krieger Institute, Batshaw and his colleague Saul Brusilow developed a successful treatment for a fatal urea cycle disorder.

[9] In the past decade, the field has recovered[10][11] and Wilson and Batshaw’s teams have developed an adeno-associated virus vector that has been successful in preclinical studies of an animal model of urea cycle disorders.