JSB Views 12 meanings found JSB most often brings to mind the famed composer Johann Sebastian Bach, while the same initials also appear for university buildings, legal study boards, music groups and community events. Miscellaneous John S Bracken John Seely Brown Josef Schulz Bohumin Just Simply Better Joint Synthetic Battlespace Community Johann Sebastian Bach Joseph Smith Building Jr Symphony Ball Jimmy Swift Band Governmental Judicial Studies Board Business J S B Financial, Inc. Jourdanton State Bank