William Joseph Toti (born January 15, 1957) is a retired US Navy captain, writer, photographer and corporate executive. He is the president of Maritime Sensor Systems at L3 Technologies. Toti was the final captain of the Los Angeles-class submarine USS Indianapolis (SSN-697). He also served as commodore of Submarine Squadron 3 in Pearl Harbor, Hawaii and is known for his role in the exoneration of the captain of the World War II cruiser USS Indianapolis (CA-35), Charles B. McVay III.
As a fellow of the Brookings Institution, Toti wrote several articles on the revolution in military affairs during the 1990s. He has received the Legion of Merit award seven times and the Meritorious Service Medal two times for his work in the US Navy.