TR or tr may stand for:
A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.
Tramadol, sold under the brand name Ultram among others, is an opioid pain medication used to treat moderate to moderately severe pain.
Paul Michael Levesque (born July 27, 1969), better known by the ring name Triple H (an abbreviation of his original WWE ring name Hunter Hearst Helmsley), is an American business executive and professional wrestler.
Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), both frequently referred to as "SSL", are cryptographic protocols that provide communications security over a computer network.
A trademark, trade mark, or trade-mark is a recognizable sign, design, or expression which identifies products or services of a particular source from those of others, although trademarks used to identify services are usually called service marks.
Transformers: The Last Knight is a 2017 American science fiction action film based on the Transformers toy line created by Hasbro.
Trinidad and Tobago (, ), officially the Republic of Trinidad and Tobago, is a twin island country situated off the northern edge of the South American mainland, lying just 11 kilometres (6.8 miles) off the coast of northeastern Venezuela and 130 kilometres (81 miles) south of Grenada.
Transformers is a series of American science fiction action films based on the toys created by Hasbro and Tomy.
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle.