Willy Fischler (born 1949 in Antwerp, Belgium) is a theoretical physicist.

[1] He is the Jane and Roland Blumberg Centennial Professor of Physics at the University of Texas at Austin, where he is affiliated with the Weinberg theory group.

He is also a certified Flight Paramedic (FP-C) and was a Licensed Paramedic with Marble Falls Area EMS and a volunteer EMT with the Westlake Fire Department.

His contributions to physics include: