Joan Beverly Kroc (née Mansfield) (August 27, 1928 - October 12, 2003) was the third wife of McDonald's founder Ray Kroc. She was a philanthropist in life and death. She lived in San Diego, California.

Her will included significant bequests for a number of organizations.

• $1.5 billion for Salvation Army
• $200 million for National Public Radio
• $50 million for the University of San Diego's Joan B. Kroc Institute for Peace and Justice
• $50 million for the University of Notre Dame's Joan B. Kroc Institute for International Peace Studies
• $5 million for San Diego's KPBS public radio and television stations