Trout River Formation

{{Infobox Rockunit

| name = Trout River Formation

| image =

| caption =

| type = Geological formation

| age = {{Fossil range|Late Devonian|Late Devonian|Late Devonian}}

| period = Late Devonian

| prilithology = Limestone

| otherlithology = Shale, siltstone

| namedfor = Trout River

| namedby = C.H. Crickmay, 1953

| region = Northwest Territories
British Columbia

| country = Canada

| coordinates = {{coord|61.22|-119.90|display=inline,title|name=Trout River Formation}}

| unitof =

| subunits =

| underlies = Tetcho Formation

| overlies = Kakisa Formation
Fort Simpson Formation

| thickness = up to {{convert|91|m|ft|-1}}

| extent =

| area =

| map =

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}}

The Trout River Formation is a stratigraphic unit of Late Devonian age in the Western Canadian Sedimentary Basin.

It takes the name from the Trout River, and was first described on the banks of the river, {{convert|35|km|mi}} upstream from the Mackenzie River, by C.H. Crickmay in 1953.Crickmay, C.H., 1953. New Spiriferidae from the Devonian of western Canada. Pub. by author, Imperial Oil Limited, Calgary, 11p.Crickmay, C.H., 1957. Elucidation of some Western Canada Devonian Formations; published by the author, Imperial Oil Limited, Calgary, Alberta, 14 p.