BSV
BSV are initials often adopted by German sports clubs, the SV standing for Sportverein or Spielverein:

Berliner SV 1892 (Berliner Sport-Verein)
Berliner SV 92 Rugby (Berliner Sport-Verein)
BSV Kickers Emden (Barenburger Sportverein)
BSV 98 Bayreuth which merged with 1. FC Bayreuth to form FSV Bayreuth
BSV Halle-Ammendorf (Ballspielverein)
BSV 07 Schwenningen (Ballspielverein)

Other sporting clubs:
BSV Limburgia (Dutch)
BK Søllerød-Vedbæk (Danish)

BSV may also refer to:
Banana streak virus
Bilim ve Sanat Vakfı, the foundation which established Istanbul Şehir University
Bitcoin Satoshi Vision (BSV), a cryptocurrency forked from Bitcoin Cash (BCH) in November 2018
The .BSV file extension in BSAVE (graphics image format)
Bluespec SystemVerilog, a hardware description programming language
Buckshaw Parkway railway station's station code
Black Sign Variation, another name for Black American Sign Language
Bodo saltans virus