A urinal (US: /ˈjʊərənəl/, UK: /jʊəˈraɪnəl/) is a sanitary plumbing fixture similar to a toilet, but for urination only. Urinals are often provided in male public restrooms in Western countries (less so in Muslim countries). They are usually used in a standing position. Urinals can be equipped with manual flushing, automatic flushing, or without flushing, as is the case for waterless urinals. They can be arranged as single sanitary fixtures (with or without privacy walls), or in a trough design without privacy walls.

Urinals designed for females ("female urinals") also exist but are rare. It is possible for females to use stand-up urinals using a female urination device. The term "urinal" may also apply to a small building or other structure containing such fixtures. It can also refer to a small container in which urine can be collected for medical analysis, or for use where access to toilet facilities is not possible, such as in small aircraft, during extended stakeouts, or for the bedridden.

A stand-up urinal can be used conveniently and appropriately by someone who has a penis or other adaptive means with which to urinate from a standing position. There is no age restriction, and urinals are commonly used by men and boys of all ages. Female urinals also exist but are not common.

In busy public toilets, urinals are installed for efficiency. Compared with urination in a general-purpose toilet, usage is faster and more sanitary because at the urinal there are no additional doors or locks to touch, and no seat to turn up. Consistent use of urinals also keeps the toilet stalls cleaner and more available for persons who need to defecate. A urinal takes less space, is simpler, and consumes less water per flush (or even no water at all) than a flush toilet. Large numbers of them are usually installed along a common supply pipe and drain. Urinals may also come in different heights, to accommodate tall and short users.

Public urinals usually have a plastic mesh guard, which may optionally contain a deodorizing urinal deodorizer block or "urinal cake". The mesh is intended to prevent solid objects (such as cigarette butts, feces, chewing gum, or paper) from being flushed and possibly causing a plumbing stoppage. In some restaurants, bars, and clubs, ice may be put in the urinals, serving some of the same purposes as the deodorizing block without dispensing odorous chemicals.

For purposes of space and economic practicality, urinals are not typically placed inside stalls. Unlike in female public toilets that do not have urinals, optimal resource efficiency in male restrooms therefore requires urinating in full visibility of other users. In recent years, it has become more common in some countries for dividers or partitions to be installed between urinals to eliminate any chance of incidental exposure during the process of urination.

Urinals in high-capacity public toilets are usually arranged in one or more rows directly opposite the door, so that users have their backs to people entering or standing outside. Often, one or two of the urinals, typically at one end of a long row, will be mounted lower than the others; they are meant for the disabled and other users who cannot reach the regular urinals. In facilities where people of various heights are present, such as schools, urinals that extend down to floor level may be used to allow anyone of any height to use any urinal.

Instead of individual fixtures, trough urinals may be installed. These designs can be used by a number of people simultaneously, but they do not allow for much privacy. They are often installed where there is a high peak demand, such as in schools, music festivals, theatrical events, sports stadiums, discos, dance clubs, and convention halls.