Senni Beds

{{Use dmy dates|date=April 2022}}

{{Infobox rockunit

| name = Senni Beds

| image = North ridge of Mynydd Troed - geograph.org.uk - 388459.jpg

| caption = Mynydd Troed, the upper part of the hill consisting of the Senni Beds Formation

| type = Formation

| age = Devonian

| period = Devonian

| prilithology = Mudstone

| otherlithology = Sandstone

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| region = Wales

| country = United Kingdom

| coordinates =

| unitof = Old Red Sandstone

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The Senni Beds is the former name of the Senni Formation in Wales. It preserves fossils dating back to the Devonian period.