MRR may stand for:
Finance
*
Monthly Recurring Revenue, a returning monthly income stream
*Market Reference Rate, e.g. Libor, Sofr
Literature and humanities
*
Marcel Reich-Ranicki (1920–2013), German literary critic
*
T.R.S. Broughton's (1900–1993), ''Magistrates of the Roman Republic''
Media and pop culture
* ''
Maximumrocknroll'', a punk zine
* ''
My Restaurant Rules'', an Australian reality show
Online business
*
Master Resell Right
Roads
In the names of roads, Middle Ring Road:
*
Kuala Lumpur Middle Ring Road 1 (Malaysia), an urban and municipal main ring road in Kuala Lumpur
*
Kuala Lumpur Middle Ring Road 2 (Malaysia), a ring road connecting neighborhoods near Kuala Lumpur and Selangor
*
Middle Ring Road (Tianjin)
The Middle Ring Road is a system of roads partly encircling the core of Tianjin
Tianjin (; ; Mandarin: ), alternately romanized as Tientsin (), is a municipality and a coastal metropolis in Northern China on the shore of the Bohai Sea. It ...
(China), a system of roads partly encircling the core of Tianjin
*
Birmingham Middle ring road
The A4540 is a ring road in Birmingham, England, also known as the Middle Ring Road, or the Middleway. It runs around the centre ( St Philip's Cathedral) of the city at a distance of approximately . Birmingham City Centre is the area within t ...
(A4540) in England
*
Mackay Ring Road, a proposed bypass route of Mackay
Science
*
Mean reciprocal rank, a search quality measure in information retrieval
*
Modulating retro-reflector A modulating retro-reflector (MRR) system combines an optical retro-reflector and an optical modulator to allow optical communications and sometimes other functions such as programmable signage.
Free space optical communication technology has eme ...
, Free space optical communications technology
Sport
*
Manchester Road Race, a Thanksgiving Day race held annually since 1927
Other
*
José María Velasco Ibarra Airport
José María Velasco Ibarra Airport ( es, Aeropuerto J.M. Velasco Ibarra) is an airport serving Macará, a city in the Loja Province of Ecuador. Macará is on Ecuador's border with Peru.
The airport is named for José María Velasco Ibarra, a fo ...
(IATA code), an airport serving Macará, Ecuador
* Manila Railroad Company, former name of the
Philippine National Railways
The Philippine National Railways (PNR) ( fil, Pambansang Daang-Bakal ng Pilipinas and es, Ferrocarril Nacional de Filipinas) is a state-owned railway company in the Philippines which operates one commuter rail service between Metro Manila an ...
*
Marine Raider Regiment, a special operations force of the United States Marine Corps
*
Multi Rolle Radio (military), a modular radio set
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