GJ

from Wikipedia, the free encyclopedia

GJ stands for:

Gap Junction , a cell-cell channel for information transfer (biology)
Germania Judaica , research project
Fiscal year
Giga joules , 1 GJ = 10 ⁹ J.
Gliese Jahreiß catalog , a star catalog by Wilhelm Gliese and Hartmut Jahreiß
good job , great job , see list of abbreviations (net jargon)
Green youth
Cast iron , according to EN 1562
Gutenberg-Jahrbuch , a scientific journal on book studies

GJ as a distinctive sign on license plates:

Albania: Gjirokastra District (expiring)
Great Britain: Maidstone
India: Gujarat
Romania: Gorj County