Dress pants (also known as suit pants) are a style of pants intended as formal or semi-formal wear. They are often made of either wool or polyester (although many other synthetic and natural textiles are used) and may be designed to be worn with a matching suit jacket. Dress pants have a crease on them because of their tight-fitting nature. Unlike formal trousers (also known as formal pants), dress pants are not to be worn with a white tie outfit and must be bought separately from the suit jacket (unless the suit jacket is a part of a two-piece or three-piece ensemble).

Dress pants can be worn at many formal and semi-formal occasions combined with a shirt that has no tie and a more relaxed fashion, which can be considered smart, smart casual, or casual smart. An example of which could be a christening or non-denominational naming ceremony.