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 Kuala Lumpur Middle Ring Road 1 or the stretch of roads including Jalan Tun Razak, Lebuhraya Sultan Iskandar (Lebuhraya Mahameru), Jalan Damansara, Jalan Istana and Jalan Lapangan Terbang is an urban and municipal main ring road in Kuala Lumpur. ...

(Malaysia), an urban and municipal main ring road in Kuala Lumpur *

Kuala Lumpur Middle Ring Road 2 Kuala Lumpur Middle Ring Road 2 (MRR2 or Kuala Lumpur Middle Ring Road 2 Scheme), Federal Route 28, is a ring road built by the Malaysian Public Works Department (JKR) to connect neighborhoods near the boundary of Federal Territory of Kuala Lumpur ...

(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 The Mackay Ring Road is a bypass route near Mackay, Queensland, Australia The proposed full length of the road is long and will be built in 3 stages. Stage 1 opened in September 2020. Stage 1 is 11.34 km in length and connects the Bruce ...

, a proposed bypass route of Mackay

Science

Mean reciprocal rank The mean reciprocal rank is a statistic measure for evaluating any process that produces a list of possible responses to a sample of queries, ordered by probability of correctness. The reciprocal rank of a query response is the multiplicative inve ...

, 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 The Marine Raider Regiment (MRR), formerly known as the Marine Special Operations Regiment (MSOR), is a special operations force of the United States Marine Corps, which is a part of Marine Corps Special Operations Command (MARSOC). Renamed f ...

, a special operations force of the United States Marine Corps *

Multi Rolle Radio Multi Rolle Radio (English: Multi Role Radio) is a modular radio set which supports high speed frequency hopping and strong encryption. It was ordered in early 1993 and first put to operative use in mid-1995. It operates on standard military VHF ...

(military), a modular radio set {{disambiguation