RLB may refer to:
Raiffeisenlandesbanken, co-operative banks in Austria Railroad Labor Board, arbitrated labor disputes in 1920s United States Reconciliation and Liberation Bloc, Iraqi political party, 1995–2008 , an agrarian political association of Weimar Germany. Rider Levett Bucknall, a British-based global construction company founded by David Bucknall , air raid protection organisation in Nazi Germany Rebecca Long-Bailey (born 1979), British politician Régis Le Bris (born 1975), French football manager