Callahan Creek is a stream in Boone County in the U.S. state of Missouri. It is a tributary of Perche Creek.[1]
The stream headwaters arise in northwest Boone County just southeast of Harrisburg adjacent to Missouri Route 124 (at 39.1386°N -92.4578°W) and it flows south to southeast to its confluence with Perche Creek (at 38.9808°N -92.4103°W) about one half mile north of I-70 at the northwest corner of Columbia.[2]
A variant name was Callaham's Creek. The creek's name is a corruption of the last name of William Callaham, a pioneer settler.[3]