'Black-eyed Susan' or 'All in the Downs' is an iconic song by John Gay (1685 - 1732)

'The Black-eyed Susans' is also the name of a jazz quartet from Baltimore

'The Blackeyed Susans' is the name of an Australian band

Rudbeckia hirta, a member of the sunflower tribe of the large family Asteraceae

A number of other members of the genus Rudbeckia

The Black-eyed Susan, Hibiscus trionum in family Malvaceae

The Black-eyed Susan vine, Thunbergia alata, in family Acanthaceae

"Blackeyed Susan" is the name of a song by the Triffids, written by David McComb from the album The Black Swan (1989)

"Black-eyed Susan" is a Morrissey song from his album My Early Burglary Years

"Black Eyed Susan" is a Paul Westerberg song from his album 14 Songs