TSN may refer to:
Science and technology Translin, a DNA binding protein involved in microRNA function Taxonomic serial number, a stable and unique taxonomic serial number issued by the Integrated Taxonomic Information System The Science Network, a non-profit, web-based organization concerned with science and its impact on society The Sierra Network, an online space by Sierra On-Line from 1991 to 1998 Time-Sensitive Networking, a set of IEEE 802 standards that define mechanisms for the transmission of time-sensitive data over Ethernet networks
Film and media Televiziyna Sluzhba Novyn, an integrated TV/web news service of the Ukrainian 1+1 TV channel
The Sporting News, American-based sports website and former magazine The Sports Network, a Canadian sports channel Texas State Network, an all-news radio network available for stations in the state of Texas Television Sydney, a former television station in Sydney, Australia, which had a callsign of TSN
Other uses Thomastown railway station, Melbourne Tianjin Binhai International Airport (IATA code: TSN), Dongli District, Tianjin, China Tswana language (ISO 639 code: tsn), a language of Southern Africa Tyson Foods (NYSE ticker TSN), an American multinational food processing corporation Tan Son Nhat International Airport, the main airport servicing Ho Chi Minh City, Vietnam