For the fictional cat of the same name, please see Dinah (cat).
Dinah was a character featured in the song "I've Been Working on the Railroad". A section of the song dealt with someone being in the kitchen with Dinah, "strummin' on the old banjo."
The Doctor sang the song in 2376 on board of the USS Voyager while treating a group of injured Qomar, including a verse featuring Dinah. (VOY: "Virtuoso")