The United States Board on Geographic Names settled on "West Fork River" as the stream's name in 1902.
 According to the Geographic Names Information System, the West Fork River has also been known historically as:
Muddy River
West Branch
West Fork
West Fork Monongahela River
West Fork of Monongahela River
West River
The United States Board on Geographic Names settled on "West Fork River" as the stream's name in 1902.  According to the Geographic Names Information System, the West Fork River has also been known historically as:
Muddy River
West Branch
West Fork
West Fork Monongahela River
West Fork of Monongahela River
West River
West Fork River