CSELT

Telecom Italia Lab S.p.A.

Formerly	Centro Studi e Laboratori S.p.A. (1961-1964) Centro Studi e Laboratori Telecomunicazioni S.p.A. (1964-2001)
Company type	Subsidiary
Industry	Telecommunications
Founded	1961 (1961)
Founder	STIPEL
Headquarters	Turin , Italy
Area served	Worldwide
Key people	Luigi Bonavoglia Basilio Catania Cesare Mossotto
Net income	150k Euro (2000)
Owner	IRI-STET (until the 1990s), Telecom Italia (since the 1990s)
Number of employees	1200 (in 2000)
Parent	IRI
Divisions	Voice Technologies, Media Technologies, Fiber Optics Technologies

Telecom Italia Lab S.p.A. (formerly Centro Studi e Laboratori Telecomunicazioni S.p.A.; CSELT) is an Italian research center for telecommunication based in Torino, the biggest in Italy and one of the most important in Europe.

It played a major role internationally especially in the standardization of protocols and technologies in telecommunication: perhaps the most widely well known is the standardization of mp3.

CSELT has been active from 1964 to 2001, initially as a part of the IRI-STET group, the major conglomerate of Italian public Industries in the 1960s and 1970s; it later became part of Telecom Italia Group. In 2001 was renamed Telecom Italia Lab as part of Telecom Italia Group.