A row house is a type of housing that is commonly found in large cities in North America and around the world. They are groupings of identical or nearly identical low-rise homes that are lined up shoulder-to-shoulder and share a roofline and one or both side walls. Row houses are typically two to four stories high and are designed to house both single families as well as small multi-family homes. They are also known as terraced houses in the U.K., Australia, and elsewhere. Row houses became popular as an economical solution for providing middle-class housing in an urban setting and as an early form of urban planning. They allowed for the creation of harmonious streets, terraces, and squares, and helped to prevent cities from growing haphazardly.

It is important to note that the term "row house" can also refer to a fitness class offered by Row House, a company that offers full-body rowing classes in the U.S. and Canada.