Zwikken (pronounced "tsvikken") is a Dutch gambling game of the trick-and-trump type using playing cards and designed for three to six players. It is "an old soldiers' game".

Zwikken is an old Dutch game of French origin, sometimes called in English Dutch Gleek. It may be related to German Tippen. In the Netherlands it is illegal to play the game in public.

The following is a summary of mid-19th century rules from the compendium, Nieuwe Beschrijving der Meest Gebruikelijke Kaartspelen ("New Description of the Most Common Card Games").

The game is played by three to six people, but four or five is most common. A full pack of 52 cards is used or, if only three play, a Jass pack of 32 cards will suffice. The dealer antes 3 stakes to the pot then deals three cards each in clockwise order before turning the next for trump.

A round of bidding follows in which players elect to "play" or "pass" i.e. drop out. However, if agreed beforehand, then "just as in Lanterloo", all must play in the first and/or second hands, even if they are bound to become bête.

A player with 3 cards of the same suit wins the pot and the others are all made bête. If two or more players have a triplet, the higher ranking one wins i.e. three Aces beat three Kings, three Kings beat three Queens, etc. The highest combination is 3 cards of the same rank as the trump upcard, forming a quartet. If agreed, a player with 2 cards of the same rank as the upcard wins, provided no others have a triplet in hand.

If there are no combinations, three tricks are played for and each trick won earns a third of the pot. If two or more want to "play", a trump must be the led to the first and second tricks. Lacking trumps, forehand leads any card face down, as do any others who have no trumps. If no one has a trump, the trick falls to the player who led. Otherwise players must follow suit if able; if unable to follow, they play any card.

The following is a summary of typical 20th century rules drawn from several Dutch sources by David Parlett (1977).