FLL
FLL stands for:
- Fiber in the Local Loop (optical data transmission)
- First Lego League , a robot competition for children and adolescents held worldwide by the Lego company
- Fort Lauderdale-Hollywood International Airport , an airport in the USA, according to the IATA airport code
- Accounts receivable from deliveries and services, classification item in the balance sheet in accounting
- Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau , an association for the creation of specialist reports, recommendations for action and guidelines in gardening and landscaping based in Bonn
- Frequency-locked loop , a method for stabilizing the output frequency of oscillators