The list of mammals of New Hampshire includes all mammal species living in the US state of New Hampshire. Four species of mammals are currently extirpated from the state: gray wolf,^[1] cougar,^[2] wolverine,^[3] and caribou.^[4] The list does not include species found only in captivity.

While New Hampshire does not have a state mammal, it does have a state animal (the white-tailed deer)^[5] and a state wildcat (the bobcat).^[6]

Family: Didelphidae

• Virginia opossum, Didelphis virginiana^{[7] [8]}
  North America's only marsupial^[7] is found in all but the northernmost parts of the state.^[9]

Family: Soricidae

• American water shrew, Sorex palustris^[10]
  Found throughout the state.^[11]

• Eastern water shrew, Sorex albibarbis^{[12] [13]}
  Possibly a subspecies of the American water shrew.^[14]

• Cinereus shrew, Sorex cinereus^[15]
  Found throughout the state.^[15]

• Long-tailed shrew, Sorex dispar^[16]
  Secure and found in all but the far northern and southeastern portions of the state.^[17][16]

• Smoky shrew, Sorex fumeus^{[18] [19]}
  Found throughout the state.^[18]

• American pygmy shrew, Sorex hoyi^{[20] [21]}
  Secure and found in the northern part of the state.^[21]

• Northern short-tailed shrew, Blarina brevicauda^[22]
  Secure and found throughout the state.^[22]

Family: Talpidae

• Star-nosed mole, Condylura cristata^[23]
  Stable and secure throughout the state.^[24]

• Hairy-tailed mole, Parascalops breweri^[25]
  Stable and secure throughout the state.^[26]

Family: Vespertilionidae

• Big brown bat, Eptesicus fuscus^[27]
  Increasing and found throughout the state.^[28]

• Silver-haired bat, Lasionycteris noctivagans^[27]
  Stable and found throughout the state.^[29]

• Eastern red bat, Lasiurus borealis ^[27]

• Hoary bat, Lasiurus cinereus ^[27]

• Eastern small-footed myotis, Myotis leibii - state endangered^[27]

• Little brown bat, Myotis lucifugus - state endangered^[27][30]
  Endangered and in decline.^[31]

• Northern long-eared bat, Myotis septentrionalis - federally threatened and state endangered^{[27][32] [33]}

• Indiana bat, Myotis sodalis ^{[34] [35][better source needed]}

• Tricolored bat, Perimyotis subflavus - state endangered^[27]

• Evening bat, Nycticeius humerali^{[36][unreliable source?]} Some sources fail to note the presence of this species in New Hampshire. ^[37]

Family: Leporidae

• Snowshoe hare, Lepus americanus^[38]

• Eastern cottontail, Sylvilagus floridanus^[39] - introduced ^[40]
  Found in southern part of the state.^[39]

• New England cottontail, Sylvilagus transitionalis - endangered^[41]

Family: Castoridae

• North American beaver, Castor canadensis^[42]

Family: Erethizontidae

• North American porcupine, Erethizon dorsatum^[43]

Family: Dipodidae

• Woodland jumping mouse, Napaeozapus insignis^{[44] [45]}

• Meadow jumping mouse, Zapus hudsonius^{[46] [47]}

Family: Cricetidae

• Southern red-backed vole, Clethrionomys gapperi^{[48] [49]}

• Rock vole, Microtus chrotorrhinus^{[50] [51]}

• Eastern meadow vole, Microtus pennsylvanicus^{[52] [53]}

• Woodland vole, Microtus pinetorum^{[54] [55]}

• Muskrat, Ondatra zibethicus^{[56] [57]}

• White-footed mouse, Peromyscus leucopus^{[58] [59]}

• Eastern deer mouse, Peromyscus maniculatus^{[60] [61]}

• Northern bog lemming, Synaptomys borealis^{[62] [63]}

• Southern bog lemming, Synaptomys cooperi^{[64] [65]}

Family: Muridae

• House mouse, Mus musculus - introduced^{[66] [67]}

• Norway rat, Rattus norvegicus - introduced^{[68] [69]}

• Black rat, Rattus rattus - introduced^[70]

Family: Sciuridae

• Northern flying squirrel, Glaucomys sabrinus^{[71] [72]}

• Southern flying squirrel, Glaucomys volans^{[73] [74]}

• Groundhog, Marmota monax^{[75] [76]}

• Eastern gray squirrel, Sciurus carolinensis^{[77] [78]}

• Eastern chipmunk, Tamias striatus^{[79] [80]}

• American red squirrel, Tamiasciurus hudsonicus^{[81] [82]}

Family: Felidae

• Canada lynx, Lynx canadensis^[83]

• Bobcat, Lynx rufus ^[84]
  The New Hampshire State Wildcat is the bobcat. ^[6]

• Cougar, Puma concolor - possibly extirpated^{[85] [86]}
  • Eastern cougar, P. c. couguar - possibly extirpated ^{[87] [2]}

Family: Canidae

• Eastern Coyote, Canis latrans^[88]

• Gray wolf, Canis lupus - extirpated ^[1]

• Gray fox, Urocyon cinereoargenteus^{[89] [90]}

• Red fox, Vulpes vulpes^[91]

Family: Ursidae

• American black bear, Ursus americanus^[92]

Family: Mephitidae

• Striped skunk, Mephitis mephitis^{[93] [94]}

Family: Mustelidae

• Wolverine, Gulo gulo - extirpated ^[3]

• North American river otter, Lontra canadensis^[95]

• American marten, Martes americana^[96]

• American ermine, Mustela richardsonii^[97]

• Long-tailed weasel, Neogale frenata^{[98] [99]}

• American mink, Neogale vison ^[95]

• Fisher, Pekania pennanti^[100]

Family: Procyonidae

• Racoon, Procyon lotor^[101]

Family: Cervidae

• Moose, Alces alces^[102]

• White-tailed deer, Odocoileus virginianus ^[103]
  The New Hampshire State Animal is the white-tailed deer. ^[5]

• Caribou, Rangifer tarandus - extirpated^[4]

Families: Monodontidae, Physeteroidea, Ziphioidea, Delphinidae, Phocoenidae
Various whales,^[104] dolphins,^[105] and porpoises^[106] are sometimes visible off the coast of New Hampshire.^[107]

• List of birds of New Hampshire
• List of mammals of New England