RTO

RTO may refer to:

Organisations

 * The Really Terrible Orchestra, a British amateur orchestra
 * Regional Transport Office, Indian government bureau
 * Regional transmission organization, in electric utility distribution
 * Registered training organisation
 * NATO Research and Technology Organisation, a division of the North Atlantic Treaty Organisation (NATO)
 * Russian theatrical society, which was formed in the 19th century
 * Research technology organization, which is non-profit organisation in EU whose core mission is to produce, combine and bridge various types of knowledge, skills and infrastructures to deliver a range of research and development activities in collaboration with public and industrial partners of all sizes.

Other

 * Return to office, a requirement set by an executive compelling workers to gather in the office during the COVID-19 pandemic
 * Return to owner, an acronym used in social media
 * Recovery time objective, the time for a business process to be restored after a disruption
 * referred-to-output
 * Rejected takeoff, in aviation
 * Regenerative thermal oxidizer, in off-gas treatment
 * Retransmission timeout, in the Transmission Control Protocol
 * Reverse takeover, a merger between a public company and a private company
 * Rent-to-own a piece of property
 * Radiotelephone operator, a former occupational specialty in the U.S. military
 * Request time out, a packet loss on ping (networking utility)