A wolfwere is the opposite of a werewolf: as a werewolf is a man that transforms into a wolf or a hybrid man-wolf form, a wolfwere is a wolf that transforms into a man or a hybrid form. The term "wolfwere" originates in the Dungeons & Dragons role-playing game, but the general concept is not unique to that game.
In the Dungeons & Dragons role-playing game, a "Wolfwere" is a wolf who polymorphs into a quadrupedal human shape and a humanoid-wolf hybrid.
In Werewolf: The Apocalypse, the Lupus breed of Garou (werewolves) are similar creatures. They are born from the union of a werewolf and a wolf. They are born as ordinary wolves, and will eventually go through a change in which they gain human intelligence and the ability to shapeshift from wolf to human and various states in between. This concept was scrapped when Werewolf: The Apocalypse was ended and replaced with Werewolf: The Forsaken, a similar game with a new setting and new rules.
The character of Brother Lupin in the Discworld novel Reaper Man is also a wolf who transforms into a human, although the book refers to him as a "wereman".
In the Peter David novella Howling Mad, the main character is a wolf, who after being bitten by a werewolf, is able to transform into a human.
In River (novel) , the main character is a wolf, who after being bitten by a human, becomes human herself.
In the Sherrilyn Kenyon novel Bad Moon Rising, the main character, Fang Kattalakis, is a wolfwere.