Catoosa is a city in Rogers and Wagoner counties in the U.S. state of Oklahoma. The population was 7,159 at the 2010 census compared to 5,449 at the 2000 census. This was a 31.2 percent increase during the decade.
Catoosa is an inland seaport and the terminus of the Kerr-McClellan Arkansas River Navigation System. The Port of Catoosa is the second farthest inland seaport in the United States behind Duluth, Minnesota, linking Tulsa to the Arkansas River and eventually to the Gulf of Mexico.
Catoosa is located along historic Route 66.
The name of the city is derived from the Cherokee language, phonetically pronounced "Ga-du-si" or "Ga-tu-si". Various interpretations of this word exist, including: "between two hills", "on the hill", "into the hills", and possibly signifying a prominent hill or place thereon.