Forbush can refer to:
Fictional characters Forbush Man, a character in the comic book Not Brand Echh Nellie Forbush, a character in the musical South Pacific
People Scott Forbush (1904–1984), astronomer Edward Howe Forbush, ornithologist and author of Birds of New England
Places Forbush, Iowa, an unincorporated community Forbush Township, Yadkin County, North Carolina, USA Forbush, North Carolina, a community within Forbush Township Forbush Lake on Vancouver Island
Other Forbush decrease, in astronomy, a decrease in observed cosmic ray intensity