Walter J. Haas is an American businessman and former president of the Oakland Athletics (1990âÂÂ1992) and co-chairman of the Evelyn and Walter Haas Jr. Fund.
Haas was born the son of Evelyn (née Danzig) and Walter A. Haas Jr. He has two siblings: Robert D. Haas; and Betsy Haas Eisenhardt (married to Roy Eisenhardt).
Haas married Julie Salles, a Roman Catholic, in a Unitarian ceremony in Sausalito, California. They have three children: Simone Haas Zumsteg, Charlotte Haas Prime, and Walter A. Haas III.