Kauflabet or Kauf-Labet is an historical German trick-taking card game for three to five players that was popular within women's circles.

[1] It was a simple gambling game, the name referring to the feature of exchanging or 'buying' (kaufen) cards and the penalty incurred for failing to take tricks (bête).

Although it sounds as if it may be related to the old French game of La Bête, the latter had a different bidding process, no dropping out and more complex staking system.

[5][a] The game may have been prevalent in Swabia, Upper Saxony and the Ore Mountains as it is recorded in dialect dictionaries for those regions.

The following rules are based on Corvinus' incomplete description of 1739, although there are several other very similar accounts:[1] Three or four players use a German-suited pack.