MTEL CG, M:tel Crna Gora (m:tel), a telecommunications company in Montenegro
MTEL CG (m:tel), a telecommunications company in Montenegro, owned by Telekom Srbija
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The Massachusetts Tests for Educator Licensure, a teacher licensing exam required for teachers in the Commonwealth of Massachusetts
Nigerian Telecommunications Limited, or NITEL, is the principal telecommunications company in Nigeria, and was owned by the government of Nigeria until it was sold to Mtel by the Bureau of Public Enterprises (BPE).
Mtel Masters is an annual super-GM chess tournament held since 2005 in Sofia, the capital of Bulgaria, sponsored and organized by the leading Bulgarian mobile network operator, M-Tel.