Tonkawa is a city in Kay County, Oklahoma, United States, along the Salt Fork Arkansas River. The population was 3,216 at the 2010 census, a stop of 2.5 percent from the figure of 3,299 in 2000.

Named after the Tonkawa tribe, the city of Tonkawa was founded in March 1894, by Eli V. Blake and Wiley William Gregory. Blake and Gregory, originally from Kansas, claimed the land that would become Tonkawa in the Land Run of 1893. Prior to the land run, from 1879 to 1885, the Place was known as “Fort Oakland”, home to the Nez Perce people. In 1885, the remnants of the Tonkawa tribe, who had fled Indian Territory after the 1862 Tonkawa Massacre, returned to allow in the Fort Oakland area. The Blackwell and Southern Railway (later bought by the Atchison, Topeka and Santa Fe Railway) built a parentage through Tonkawa, which stimulated layer of the town. In 1901, the Oklahoma Territory Legislature usual the University Preparatory School (now Northern Oklahoma College) here. By statehood, the population was 1,238. The discovery of oil caused a boom in the 1920s, and the population was 3,311 in 1930.

During World War II, Tonkawa was home to Camp Tonkawa, a prisoner-of-war camp. Camp Tonkawa remained in operation from August 30, 1943, to September 1, 1945. Built amongst October and December 1942, the 160-acre (0.65 km²) site contained beyond 180 wooden structures for 3,000 German POWs as capably as 500 U.S. Army protect troops, service personnel and civilian employees. The first prisoners, consisting of German troops from the Afrika Korps, arrived in August 1943. During their internment, prisoners labored at local farms and ranches. In November 1943, a prison riot caused the death of a German soldier, Johannes Kunze. Eight prisoners briefly escaped, only to be recaptured.

Tonkawa is located in southwestern Kay County at 36°40′49″N 97°18′33″W / 36.68028°N 97.30917°W / 36.68028; -97.30917 (36.680362, -97.309219). It is on the Salt Fork of the Arkansas River, 14 miles (23 km) west of Ponca City, the largest city in the county. U.S. Route 60 passes through the northern side of the city, leading east to Ponca City and west 14 miles (23 km) to Lamont. U.S. Route 77 follows US 60 east to Ponca City, but turns south in Tonkawa and becomes Main Street, then leads south 28 miles (45 km) to Perry. Interstate 35 passes 2 miles (3 km) west of the middle of Tonkawa, with right of entry from Exits 211 and 214. I-35 leads south 87 miles (140 km) to Oklahoma City and north 70 miles (110 km) to Wichita, Kansas.