QB may refer to:
QBasic (Quick Beginners All purpose Symbolic Instruction Code) is an IDE and interpreter for a variety of the BASIC programming language which is based on QuickBASIC.
QBE Insurance Group Limited is Australia's largest global insurer. It provides insurance services mainly to Australia, America, Europe and Asia Pacific region.
QBoy (born Marcos Jose Brito on 10 October 1978) is a UK-based rapper, producer, DJ, writer and presenter.
qBittorrent is a cross-platform client for the BitTorrent protocol. It is free and open-source software released under the GNU General Public License version 2 (GPLv2).
QBlade is an open source, cross-platform simulation software for wind turbine blade design and aerodynamic simulation.
The QBU-88 (Type 88) sniper rifle is a designated marksman rifle deployed by the Chinese People's Liberation Army.
QB64 (originally QB32) is a self-hosting BASIC compiler for Microsoft Windows, Linux and Mac OS X, designed to be compatible with Microsoft QBasic and QuickBASIC.