QTO Views 10 meanings found QTO is shorthand for procurement processes like quote‑to‑order and quantity take‑off, as well as for optoelectronics firms and a regional theatre orchestra, reflecting both commercial and cultural uses. Miscellaneous Quantity Take Off Quote To Order queen ten of Community Queensland Theatre Orchestra International Querétero, Mexico Academic & Science Are you going to enter dock or port? QT Optoelectronics Quick Turn Oscillator Business QT Optoelectronics (Fairchild Semiconductor) Sports IECG Quad Tournaments Office