Bidens hyperborea (common names estuary beggarticks, northern beggarticks, or estuary bur-marigold) is a variable species of flowering plant in the family Asteraceae, known from estuarine regions in northeastern North America. It is similar to Bidens cernua, Bidens laevis, and Bidens eatonii. B. hyperborea is listed as an endangered species in the state of Massachusetts, where it is threatened by habitat degradation, and is listed by NatureServe as critically imperiled (S1) in the province of Ontario and possibly extirpated from New Hampshire.

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