A T-shirt (or tee shirt, or tee) is a style of unisex fabric shirt, named after the T shape of the body and sleeves. It is normally associated with short sleeves, a round neck line known as a crew neck, with no collar.

Typically made of cotton textile in a jersey knit, it has a distinctively pliable texture compared to shirts made of woven cloth. The majority of modern versions have a body made from a continuously woven tube, on a circular loom, so that the torso has no side seams. The manufacture of T-shirts has become highly automated, and may include fabric cutting by laser or water jet.