Waubonsie (c. 1760 – c. 1848) was a leader of the Potawatomi Native American people. His name has been spelled in a variety of ways, including Wabaunsee, Wah-bahn-se, Waubonsee, Waabaanizii in the contemporary Ojibwe language, and Wabanzi in the contemporary Potawatomi language (meaning "He Causes Paleness" in both languages).
The documentary record of Waubonsie's life is sparse. His birth name, parentage, and place of birth are unknown. The year of his birth has been estimated from 1756 to 1765. His brother Mucadapuckee ("Black Partridge") was also a chief. According to tradition, Waubonsie acquired his name (which means "Break of Day" (waaban-izhi) or "He Causes Paleness" (waabaanizii)) after sneaking into a place where some enemy Osages were located, killing and scalping one or more of them, and escaping at daybreak.
During Tecumseh's War and the War of 1812, Waubonsie supported Tecumseh and the British against American expansion. In September 1811, Waubonsie led an attack on one of William Henry Harrison's supply boats as it ascended the Wabash River in Indiana. Waubonsie jumped on the boat, killed the lone American on board, and leapt off before the Americans on the far shore could respond. Waubonsie, Shabonna, and Winamac led Potawatomi warriors against Harrison's troops at the Battle of Tippecanoe on November 7, 1811.
Waubonsie opposed the attack on Fort Dearborn in 1812, and protected the family of John Kinzie during the massacre that followed. After the war, he signed treaties with the United States, and thereafter worked to avoid confrontation with the Americans. With other Potawatomi leaders, in 1827 he refused to join the Winnebago War against the Americans.