Arnold Creek is a tributary of Middle Island Creek, long, in West Virginia in the United States. Via Middle Island Creek and the Ohio River, it is part of the watershed of the Mississippi River, draining an area of in a rural region on the unglaciated portion of the Allegheny Plateau.
Arnold Creek is formed in western Doddridge County, approximately southwest of West Union, by the confluence of its left and right forks:
From this confluence, Arnold Creek flows generally northward through western Doddridge County. Near its mouth, it flows into southern Tyler County for a short distance, returns to Doddridge County, and flows into Middle Island Creek from the south on the boundary of Doddridge and Tyler counties, approximately east-northeast of the unincorporated community of Deep Valley.
According to the Geographic Names Information System, the creek has also been known historically by the spelling "Arnolds Creek."
This is a list of named streams in Arnold Creek's watershed. By default, the list is ordered from the mouth of Arnold Creek to its source.