Some rule variations can be applied to almost any game, and combinations of these variations can be used to create ad-hoc games. These include roll your own, rollouts, blind stud, and twist rounds.

Any game can also be changed by adding one or more jokers to the deck to act as wild cards, or by designating certain other cards as wild. Some specific common variations include Low hole card wild, in which each player's lowest-ranking downcard (and all other cards of that same rank) are wild in that player's hand only, and Follow the queen, in which each time a Q is dealt face up to anyone, the next face up card (and all others of that rank) become wild. The usual practice in the latter case is that if a second Q appears among the upcards, the previous wild card loses its status to the new one.

One can also vary any stud game by dealing extra downcards and requiring either that one or more hole cards be discarded at some point in the game or adding a restriction on how many of those hole cards may be played in the final hand. For example, five-card stud can be modified by dealing each player an extra downcard at the start of the game, adding the restriction that each player may only use one of his two downcards in his final hand. This game is called Crocodile stud. Likewise, seven-card stud can be modified by dealing each player three downcards instead of two on the first round, but adding the restriction that a player may use no more than two of those cards in his final hand (called Buffalo stud; if the extra hole card must be discarded after the first betting round, then it is Australian stud). If playing one of these games without the requirement to discard the extra hole card at some time during play, it is recommended as a practical matter to ensure compliance that each player physically discard one hole card immediately before showdown, before revealing the "live" hole cards (so that there can be no confusion about which cards were down).

Variations can be made by eliminating betting rounds, dealing more than one upcard at a time for one or more rounds. For example, Mississippi stud (see below) is basically seven-card stud with the second betting round removed, and the last card dealt face up instead of face down. Further adding an extra hole card as above makes it Murrumbidgee stud.

Games that mix stud-like rounds with community cards are discussed on the Community card poker page. In general, one can mix upcard rounds with community card rounds in many ways. See in particular Oxford stud on the community card game page.

Specific Variants of Stud Poker

As mentioned above, seven-card stud is probably the most common form of the game, with most other games being variants of that, although five-card stud is also a basic pattern upon which many variations are built. These games are described on their own page. Most of the games described below started as ad-hoc variants, but they have either become popular enough to have a common name, or else have some unique feature.