The Oregon Coast Penutian languages are a family of three small languages or language clusters on the Oregon Coast

Oregon Coast

The Oregon Coast is a region of the U.S. state of Oregon. It runs generally north-south along the Pacific Ocean, forming the western border of the state; the region is bounded to the east by the Oregon Coast Range. The Oregon Coast stretches approximately from the Columbia River in the north to...

 that has moderate support. Although much of their similarity is demonstrably due to language contact

Language contact

Language contact occurs when two or more languages or varieties interact. The study of language contact is called contact linguistics.Multilingualism has likely been common throughout much of human history, and today most people in the world are multilingual...

, linguists such as Scott DeLancey believe they may be genealogically related at a greater time depth. They are part of the much more hypothetical Penutian proposal.

Coast Oregon languages

• Alsean
  Alsean languages
  Alsea or Alsean was two closely related speech varieties spoken along the central Oregon coast. They are sometimes taken to be different languages, but it is difficult to be sure given the poor state of attestation; Mithun believes they were probably dialects of a single language.-Varieties:#...
  
  
  • Yaquina
    Yaquina (people)
    Yaquina originally denoted a tribe of Native Americans, now nearly extinct , along with their language . The remaining Yaquina people live on the Siletz Reservation in Oregon, and are mostly of mixed blood. -External links:*...
    
     language, spoken on the central Oregon coast around Yaquina Bay & along the Yaquina River (central Oregon coast)
  • Alsea language, spoken on the central Oregon coast around Alsea Bay and along the Alsea
    Alsea River
    The Alsea River flows from Alsea, an unincorporated community in the coastal mountains of the U.S. state of Oregon, to the Pacific Ocean near the city of Waldport. It begins at the confluence of the North Fork Alsea River and the South Fork Alsea River and ends in Alsea Bay, a wide estuary at...
    
     and Yachats
    Yachats River
    The Yachats River is a short river on the central Oregon coast, about west-north-west of Eugene. The name is the native name meaning at the foot of the mountain....
    
     rivers
• Siuslaw
  Siuslaw (tribe)
  Siuslaw is one of the three Confederated Tribes of Coos, Lower Umpqua and Siuslaw Indians located on the southwest Oregon Pacific coast in the United States. The Siuslaw language is extinct.-External links:***...
  
  
  • Siuslaw dialect spoken on the central Oregon coast along the Siuslaw River
    Siuslaw River
    The Siuslaw River is a river, approximately 110 mi long, along the Pacific coast of Oregon in the United States. It drains an area of approximately in the Central Oregon Coast Range southwest of the Willamette Valley and north of the watershed of the Umpqua River.It rises in the mountains...
    
     and around Siltcoos Lake
    Siltcoos Lake
    Siltcoos Lake is the largest lake on the Oregon Coast of the United States. Serving as the origin for Siltcoos River, it is located about six miles south of Florence, Oregon. The lake has a mean elevation of eight feet above sea level. Siltcoos Lake is a popular destination for fishing on the...
    
    
  • Kuitsh dialect spoken on the central Oregon coast around Winchester Bay and along the lower Umpqua and Smith
    Smith River (Oregon)
    Smith River is a tributary of the Umpqua River in the U.S. state of Oregon. It drains of the Central Oregon Coast Range between the watershed of the Umpqua to the south and the Siuslaw River to the north...
    
     rivers.
• Coosan
  Coosan languages
  The Coosan language family consists of two languages spoken along the southern Oregon coast. Both languages are now extinct.-Classification:* Hanis* Miluk...
  
  
  • possibly several Hanis dialects spoken along the southern Oregon cosat in the vicinity of Coos Bay
    Coos Bay
    Coos Bay is an S-shaped inlet where the Coos River enters the Pacific Ocean, approximately 10 miles long and two miles wide, on the Pacific Ocean coast of southwestern Oregon in the United States. The estuary is situated south of the Salmon River. The city of Coos Bay, once named Marshfield, was...
    
     and along the Coos River
    Coos River
    The Coos River flows for about into Coos Bay along the Pacific coast of southwest Oregon in the United States. Formed by the confluence of its major tributaries, the South Fork Coos River and the Millicoma River, it drains an important timber-producing region of the Southern Oregon Coast Range...
    
    .
  • possibly one or two Miluk dialects spoken along the southern Oregon coast around South Slough of Coos Bay and along the lower Coquille River
    Coquille River
    The Coquille River is a stream long, in southwestern Oregon in the United States. It drains a mountainous area of of the Southern Oregon Coast Range into the Pacific Ocean. Its watershed is located between that of the Coos River to the north and the Rogue River to the south.-Geography:The river,...
    
    .