List of Connecticut placenames of Native American origin

The following list includes settlements, geographic features, and political subdivisions of Connecticut whose names are derived from Native American languages.

State

 * Connecticut – from some Eastern Algonquian language of southern New England (perhaps Mahican), meaning "at the long tidal river" (after the Connecticut River).

Settlements

 * Aspetuck: (Paugussett) "at the high place"
 * Shared with the Aspetuck River.
 * Cos Cob: (Mohegan from Cassacubque) "high rocks"
 * Hockanum: (Podunk) "hook"
 * Shared with the Hockanum River.
 * Massapeag: (Mohegan) "place at the large cove"
 * Mohegan: named after the Mohegan people.
 * Mianus River (and town): (Paugussett) a 17th-century chief's name – "Mianu/Mayanno's"
 * Moodus): (Wangunk) from "mache moodus" or "bad noises"
 * Shared with the Moodus River and Moodus Reservoir.
 * Moosup: (Narragansett) a chief named "Mausup"
 * Mystic River (and town): (Pequot-Mohegan) "great tidal river"
 * Naugatuck River (and town): (Quinnipiac) "single tree"
 * Niantic River (and town): tribe; "point of land on tidal river"
 * Norwalk River (and city): (Algonquian) noyank or "point of land" or from the name Naramauk.
 * Oronoque: (Quinnipiac) "curved place" or "land at the bend"
 * Pequabuck: (Wangunk) "clear, open pond"
 * Poquonock Bridge: (Algonquian – several) "cleared land"
 * Shared with the Poquonock River.
 * Poquetanuck: (Mohegan) "land broken up" (like dried mud cracking)
 * Quinebaug: (Nipmuck) "long pond"
 * Shared with the Quinebaug River.
 * Scitico: (Nipmuck) "land at the river branch"
 * Taconic: (Mahican) "steep ascent"
 * Uncasville: (Mohegan) 17th-century chief's name (wonkus – "fox")
 * Willimantic River (and town): (Mohegan or Nipmuck) "good cedar swamp"
 * Yantic: (Mohegan) "as far as the tide goes up this side of the river".
 * Shared with the Yantic River.

Bodies of water

 * Congamuck Ponds (on Maine border Congamond Lake): (Nipmuck) "long fishing place"
 * Coginchaug River: (Wangunk) "place where fish are dried/cured"
 * Housatonic River: (Mahican) from the Mohican phrase "usi-a-di-en-uk", "beyond the mountain"
 * Mashapaug Pond: (Nipmuck) "large pond"
 * Menunketesuck River (and Menunketesuck Island): (Hammonasset) "strong flowing stream"
 * Natchaug River: (Nipmuck) "between rivers"
 * Nepaug Reservoir: (Wangunk) "fresh pond"
 * Pachaug River (and pond): (Narragansett) "at the turning place"
 * Pataguanset Lake: (Niantic) "at the round, shallow place"
 * Pawcatuck River (Rhode Island border): (Niantic/Pequot) "the clear divided (tidal) stream"
 * Pistapaug Pond: (Quinnipiac) "muddy pond"
 * Pocotopaug Lake: (Wangunk) "divided pond" or "two ponds"
 * Quaddick Reservoir: (Nipmuck) "bend in river" or (Narragansett) "boggy place"
 * Lake Quassapaug: (Quinnipiac) "big pond" or "big rock"
 * Quinnipiac River: (Quinnipiac) "where we change our route"
 * Lake Quonnipaug: (Quinnipiac) "long pond"
 * Saugatuck River: (Paugussett) "outlet of the tidal river"
 * Shenipsit Lake: (Mohegan) "at the great pool"
 * Shepaug River: (Tunxis) "great pond"
 * Shetucket River: (Mohegan) "land between rivers"
 * Shunock River: (Mohegan) "stony place" or possibly "place between streams"
 * Skungamug River: (Nipmuck) "eel-fishing place"
 * Wangum Lake: (Paugussett) "bend/crooked"
 * Wangumbaug Lake: (Nipmuck) "crooked pond"
 * Lake Waramaug: (Mahican) "good fishing-place"
 * Winnepauk: (Mahican) "beautiful pond"
 * Wononpacook Pond: (Mahican) "land at the bend in the pond"
 * Wononskopomuc Lake: (Mahican) "rocks at the bend in the lake"
 * Wopowaug River: (Wangunk) "crossing-place"
 * Wyassup Lake: (Mohegan) "flags" or "rushes"

Islands

 * Cockenoe Island: (Montauk) from the name of a 17th-century native interpreter

Other

 * Connecticut, the state, and river: (in several dialects) "place of the long river" or "by the long tidal stream"
 * Hammonassett Point: (Hammonassett) "place of sand bars"“where we dig holes in the ground,”
 * Mohawk Mountain: eastern Iroquois tribe; Algonquian term for their western enemies – "wolves," "hungry animals," or "cannibals"
 * Sachem Head: (Algonquian/general) "chief"