Colonel Josiah Snelling (1782–20 August 1828) was the first commander of Fort Snelling, a fort located at the confluence of the Mississippi and Minnesota rivers in Minnesota. He was responsible for the initial design and construction of the fort, and he commanded it from 1820 through 1827. He had a reputation for being tough and fair-minded, but also had a mean temper when he was drunk. His second wife, Abigail Hunt Snelling, extended hospitality to visitors to the fort. She also founded a Sunday School for the fort's children and assisted families from Selkirk's Colony.
Lieutenant Colonel Henry Leavenworth was originally chosen to locate the fortification at the mouth of the St. Peter's River (the prior name of the Minnesota River) in 1819. His expedition started out in Green Bay, Wisconsin in May 1819, ascending the Fox River, then portaging to the Wisconsin River and following it downstream to its confluence with the Mississippi River at Prairie du Chien, Wisconsin. He remained at Fort Crawford with his soldiers until supplies arrived in August, 1819, and then the expedition traveled upriver to the confluence with the St. Peter's River. His soldiers originally built a winter settlement, known as Cantonment New Hope, two miles (3 km) up the St. Peter's River from the confluence. The next spring, in anticipation of flooding, he moved the troops to higher ground at a site known as Camp Coldwater, a mile up the Mississippi from the confluence of the rivers. Leavenworth was later relieved of his duty in August 1820 and succeeded by Colonel Josiah Snelling.
Two Minnesota streets, one in Minneapolis (Snelling Street), the other in Saint Paul (Snelling Avenue), in Minnesota's capital city, are named after him.
Snelling, born in 1782, was the son of a prominent Boston banker. He married Abigail Hull and fathered a son, William Joseph Snelling, in 1804. His wife died in 1810. He was recognized for his performance at the Battle of Tippecanoe, and was assigned to command Fort Harrison during the winter of 1811–12. on the Wabash River at the present site of Terre Haute, Indiana. During the War of 1812, he received the rank of Captain and was sent to Fort Detroit, where he met and married Abigail Hunt. They had 5 children, Mary, Henry Hunt Snelling, James, Marion and Josiah. After the size of the army was reduced in 1815, Snelling spent about four years on the northern border of New York. In 1820, Snelling was promoted to Colonel of the 5th Regiment of Infantry and sent to oversee the construction of Fort St. Anthony. Snelling was concerned about the unhealthy living conditions of the temporary quarters at Cantonment New Hope on the St. Peter's River. He traveled upriver from St. Louis and arrived at the cantonment on September 5, 1820, and immediately started the relocation and design of the new fort.