The letter (minuscule: ), called T with retroflex hook, is a letter of the Latin alphabet based on the letter t. It is used to represent a voiceless retroflex plosive in the International Phonetic Alphabet, and is used some alphabets of African languages.

The grapheme T (minuscule: t) is a letter in the Czech and Slovak alphabets. It is formed from Latin T with the addition of hácek and is placed right after regular T in the alphabet. It is used to denote /c/.

T (named tee ) is the 20th letter in the modern English alphabet and the ISO basic Latin alphabet. It is the most commonly used consonant and the second most common letter in English language texts.

A cedilla ( ; from Spanish), also known as cedilha (from Portuguese) or cédille (from French), is a hook or tail ( ) added under certain letters as a diacritical mark to modify their pronunciation. In Catalan, French, and Portuguese, it is used only under the c, and the entire letter is called respectively c trencada (i.e. "broken C"), "c cédille", and "c cedilhado" (or "c cedilha", colloquially).

A countdown is a sequence of backward counting to indicate the time remaining before an event is scheduled to occur. NASA commonly employs the term "T-minus" during the preparation for and anticipation of a rocket launch, and even "E-minus" for events that involve spacecraft that are already in space, where the "T" could stand for "Test" or "Time", and the "E" stands for "Encounter", as with a comet or some other space object. Other events for which countdowns are commonly used include the detonation of an explosive, the start of a race, the start of the New Year, or any anxiously anticipated event. An early use of a countdown once signaled the start of a Cambridge University rowing race. The first known association with rockets was in the 1929 German science fiction movie Die Frau im Mond (English: Woman in the Moon) written by Thea von Harbou and directed by Fritz Lang in an attempt to increase the drama of the launch sequence of the story's lunar-bound rocket.

MTV is a Canadian English language Category A cable and satellite specialty channel that is owned by Bell Media with the name and branding used under a licensing agreement with the Viacom Media Networks division of Viacom. The channel is devoted to talk, lifestyle and documentary programming, and also airs some scripted series.

The palatal hook is a type of hook diacritic formerly used in the International Phonetic Alphabet to represent palatalized consonants. It is a small, leftwards-facing hook joined to the bottom-right side of a letter, and is distinguished from various other hooks indicating retroflexion, etc.

T is the twentieth letter of the Latin alphabet.

Ŧ/ŧ (T with a bar, T with a stroke sign) is the 25th letter in the Northern Sámi alphabet, where it represents the voiceless dental fricative . It is also used in the Havasupai alphabet, and to represent the letter ט in romanizations of Hebrew. The Unicode codepoints for this letter are and .

Tau (uppercase Τ, lowercase τ; ) is the 19th letter of the Greek alphabet. In the system of Greek numerals it has a value of 300.

Tau ,Τ or τ, is the 19th letter of the Greek alphabet.