RRA

RRA is the abbreviation for:

• Stormwater retention system
• Rahanweyn Resistance Army, a Somali civil war faction in Südwestsomalia
• Round robin archives, a data storage method of RRDtool
• Relative risk aversion by Arrow and Pratt, a measure of the risk aversion of a decision

RRa is the abbreviation for:

• Right to travel date, a German journal in the field of travel law

• Disambiguation
• Abbreviation