Medina Group

{{Infobox rockunit

| name = Medina Group

| image = Medina Group.png

| caption = Outcrop of the Medina Group in Upstate New York

| type = Group

| age = Silurian

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| region = {{Flag|New York}}

| country = {{Flag|United States}}

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| subunits = *Whirlpool Sandstone

• Power Glen Shale
• Devils Hole Sandstone
• Grimsby Formation
• Thorold Sandstone
• Cambria Shale
• Kodak Sandstone{{Cite Q|Q56798368|page=1|access-date=28 September 2018|quote= }}

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The Medina Group or Cataract Group is a geologic group in New York. It dates to the Silurian period. The group includes the Whirlpool Sandstone, Power Glen Shale, Devils Hole Sandstone, Grimsby Formation, Thorold Sandstone, Cambria Shale, Cabot Head Shale and Kodak Sandstone.