Stud may refer to:

• Stud (animal) - a male animal employed for breeding
  • Stud farm
  • a virile human male (see gender role)
• A small ornamental button mounted on a short post for insertion through an eyelet
• Screw - a threaded fastener
• The interlocking circular piece of a LEGO brick
• A simple earring for pierced ears
• Cleat - a protusion on the bottom of a shoe to provide extra grip
  • Shoe studs - a traction device used on the bottom of horse shoes
  • Traction devices inserted in the tread of automobile winter tires.
• Wall stud - a vertical member within a Light-frame construction wall
• Stud poker - a kind of card game:
  • Five-card stud
  • Seven-card stud
  • Caribbean Stud Poker