What does GRU stand for?

General Register Unit (SAUS)

Genetic Resources Unit (GNE)

Geological Records Unit (SAUO)

Geology at Radford University (SAUO)

Geomorphic Response Unit (QUAC)

Glavnoe Razvedivatelnoe Upravlenie - Chief Administration for Intelligence - Division of the General Staff of the Soviet Army - Former USSR

Gold Ridge Resources - Vancouver Stock Exchange symbol

Grajau - Brazil - Airport symbol (AD)

Great Midwest Yacht Co., Sunbury, OH - Manufacturer code for watercraft hull identification number (USCG)

Gregorelli & Umberti - NCIC firearms make code (NCIC)

Grid Reference Unit - Military (CAAL)

Group

Guidance Regulator Unit

Gurkha Reserve Unit (SAUS)

Gyro Reference Unit (SAUS)

Gyroscope Reference Unit (MCD)

Kistane - Language code (ETLW)

Grus - Constellation