Mistress
Mistress is the feminine form of the English word "master" (master + -ess) and may refer to:

Romance and relationships 

 Mistress (lover), a female lover of a married man
 Maîtresse-en-titre, official mistress of a French king

Title or form of address
 Mistress (form of address)
 Mistress (college), a female college head
 Mistress of the Robes of the UK Royal Household
 Female equivalent of schoolmaster

In ancient religions
 Despoina, a Greek goddess referred to as "the mistress"
 Potnia ("mistress lady"), a title for a Greek goddess

In arts and entertainment
 Mistress (band), a band from Birmingham, England
 Mistress, a band from Germany, fronted by Angela Gossow
 Mistress (1992 film)
 Mistress (1987 film)
 Mistresses (British TV series)
 Mistresses (American TV series)
 Mistress (TV series)
 "Mistress", a song by Disturbed from Believe
 "Mistress", a song by Rebecca Ferguson from Superwoman
 "Mistress", a song by Suede from The Blue Hour
 Mistress (novel), by James Patterson, 2013
 Mistress Isabelle Brooks, American drag queen

Other uses 

 Dominatrix, in BDSM

See also
 The Mistress (disambiguation)