Haystack Mountain may refer to:
United States Haystack Mountain (Antarctica) Haystack Mountain (Connecticut) Haystack Mountain School of Crafts, Deer Isle, Maine, United States Haystack Mountain (Maryland) Haystack Mountain (Hill County, Montana), a mountain in Hill County, Montana Haystack Mountain (Jefferson County, Montana), in the Boulder Mountains Haystack Mountain (Lincoln County, Montana), a mountain in Lincoln County, Montana Haystack Mountain (Powell County, Montana), a mountain in Powell County, Montana Haystack Mountain (Sanders County, Montana) (), a mountain in Sanders County, Montana Haystack Mountain (New Mexico) Mount Haystack (New York) Haystack Mountain (Pennsylvania) Haystack Mountain (Vermont) Haystack Mountain Ski Area Haystack Mountain (Wyoming)
Elsewhere Haystack Mountain (New South Wales), Australia, northwest of the town of Bonalbo
See also Little Haystack Mountain (New Hampshire)