Gaynor is an extinct community in northeastern Nodaway County, in the U.S. state of Missouri.

[1] A former variant name was "Gaynor City".

[4] A post office called Gaynor City was established in 1879, the name was changed to Gaynor in 1895, and the post office closed in 1903.

[5] The community has the name of Edward Gaynor, a local tradesman.

[6] This Nodaway County, Missouri state location article is a stub.