William Charles Wentworth is the name of several members of the Wentworth family in New South Wales, Australia.

• William Charles Wentworth (1790-1872) helped discover a way across the rugged Blue Mountains to the west of Sydney, along with Gregory Blaxland and William Lawson. He was also a prominent poet, journalist and politician.
• William Charles Wentworth II, son of the above
• William Charles Wentworth III, son of the above
• William Charles Wentworth IV (1907-2003), son of the above, was a Liberal member of the Australian House of Representatives 1949-77, with a reputation as a fierce anti-Communist.

Several towns are named for the original William Charles Wentworth, plus the federal Parliamentary seat of Wentworth in the eastern suburbs of Sydney.

• Wentworthville.
• Wentworth Falls, New South Wales
• Wentworth, New South Wales

The well-known journalist Mungo Wentworth McCallum is a great-great grandson of the first William Charles Wentworth and a nephew of William Charles Wentworth IV.