TR or tr may stand for:
Tramadol, sold under the brandname 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 his 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.
Trinidad and Tobago (/ˈtrɪnᵻˌdæd ən təˈbeɪɡoʊ/, /-toʊˈ-/), 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.
The Christian doctrine of the Trinity (Latin: Trinitas, lit. 'triad', from trinus, "threefold") holds that God is three consubstantial persons or hypostases—the Father, the Son (Jesus Christ), and the Holy Spirit—as "one God in three Divine Persons".
In mathematics, the trigonometric functions (also called the circular functions) are functions of an angle.
Track and field is a sport which includes athletic contests established on the skills of running, jumping, and throwing.
Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text.