Wonalancet may refer to:

• Wonalancet (sachem), a 17th-century Native American chief of the Penacook people
• Wonalancet, New Hampshire, an unincorporated community in the town of Tamworth in Carroll County
• Wonalancet River, a short river in central New Hampshire and tributary of the Swift River
• Mount Wonalancet, elevation 2,780 feet (850 m), in the Sandwich Range of the White Mountains, overlooking the Ferncroft neighborhood of Wonalancet

Alternative spellings

• Wannalancit Mills, a textile-mill-turned-office-building which uses a variant spelling of Wonalancet, in Lowell, Massachusetts, which was an important fishing ground for the Pennacook
• Wannalancit Street Historic District in Lowell
• Wannalancit Lodge, Order of the Arrow lodge for the Greater Lowell Council of the Boy Scouts of America. Also the name of a former cabin located at Wah-tut-ca Scout Reservation of the Yankee Clipper Council, previously of the Greater Lowell Council.
• 1867 Wannalancet Steam Fire Engine Company #1, Malden, Massachusetts
• USS Wanaloset, also spelled USS Wanalosett, a United States Navy sloop-of-war of 1865 which was never completed, and which was intended to bear what probably is a variant spelling of Wonalancet
• USS Wannalancet (YTB-385), later YTM-385, a United States Navy harbor tug in commission from 1944 to 1946 which used a variant spelling of Wonalancet