Catocala johnsoniana

{{Short description|Species of moth}}

{{Speciesbox

| image = Catocala johnsoniana.JPG

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| taxon = Catocala johnsoniana

| authority = Brower, 1976

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Catocala johnsoniana, or Johnson's underwing, is a moth of the family Erebidae. The species was first described by Auburn Edmund Brower in 1976.{{cite web |last=Yu |first=Dicky Sick Ki |url=http://www.taxapad.com/local.php?taxonidLC=85997728 |title=Catocala johnsoniana Brower 1976|website=Home of Ichneumonoidea |publisher=Taxapad |archive-url=https://web.archive.org/web/20160315162527/http://www.taxapad.com/local.php?taxonidLC=85997728 |archive-date=March 15, 2016}}{{cite web |last=Savela |first=Markku |date=July 27, 2019 |url=https://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/noctuoidea/erebidae/erebinae/catocala/#johnsoniana |title=Catocala johnsoniana Brower, 1976 |website=Lepidoptera and Some Other Life Forms |accessdate=October 21, 2019}} It is found in the US state of California.

Adults are on wing from June to July. There is probably one generation per year.