Dennis is a census-designated place (CDP) in Labette County, Kansas, United States.

[2] Dennis had its start in the early 1880s by the building of the Memphis, Kansas and Colorado Railroad through that territory.

[4] The nearby Big Hill Archeological District is on the National Register of Historic Places.

The community is served by Labette County USD 506 public school district.

This article about a location in Labette County, Kansas is a stub.