A billiard room (also billiards room, or more specifically pool room, snooker room) is a recreation room, such as in a house or recreation center, with a billiards, pool or snooker table. (The term is sometimes also used as synonymous with "billiard hall" i.e., a business providing public access to hourly-rental or coin-operated billiard tables.)

A one-table billiard room requires enough space around the table to accommodate the range of a stroke of the cue from all angles, while also accounting for chairs, the storage rack and any other furniture that is or will be present. Optimally, there should be at least 6 ft (1.8 m) of clearance between the table and any walls, furniture or other objects, on all sides and at all corners of the table. The table size is really a measure of the bed of the table, and does not include the rails which are typically around 6 inches (15 cm) wide. The typical cue is a bit shorter than 5 ft (1.5 m) long (snooker cues, however, are often longer), and many shots need 6 in. or more of forearm-swinging room, totaling around 6 ft (1.8 m) of space. Examples of optimum minimum free space dimensions for common table sizes, using this logic:

Room 8 (1947–1968) was a neighborhood cat that wandered into a classroom at Elysian Heights Elementary School, Echo Park, California. He would live in the school during the school year and then disappear for the summer, returning when classes started again.

News cameras would arrive at the school at the beginning of the year waiting for the cat's return; he became famous and would receive up to 100 letters a day addressed to him at the school. Eventually, he was featured in a documentary called Big Cat, Little Cat and a children's book called Room 8 was written as well. Look magazine ran a three-page feature by photographer Richard Hewett in November 1962, titled "Room 8: The School Cat". Leo Kottke wrote an instrumental called "Room 8" that was included in his 1971 album, Mudlark.

As he got older, he was injured in a cat fight and suffered from pneumonia, so a family near the school volunteered to take him in. The school's janitor would find him at the end of the school day and carry him across the street.