304 may refer to:
The year 304 or the year 304 BC. Area code 304, in West Virginia 304 (number), the natural number 304 (card game), a card game popular in Sri Lanka and Tamil Nadu 304 Olga, a main-belt asteroid Peugeot 304, a small family car SAE 304 stainless steel, the most common type of stainless steel, HTTP 304 304, a fictional class battlecruiser in the Stargate series. 0304 (with intentional leading zero), an album by Jewel "304 woman," a slang term meaning a promiscuous woman. When 304 is typed into a hand-held calculator then turned upside down, the symbols resemble the word "hoe", which is an American term for a whore. Rocafonda, a neighbourhood in Mataró with the postcode 08304 . Footballer Lamine Yamal celebrates goals by gesturing the number 304 to recognise the neighbourhood.