A new and distinct sweet orange clone ‘OLL-8’ has been developed from an unstable sweet orange selection, designated as ‘OLL’, using tissue culture techniques. Undeveloped ovules from fruit of selection ‘OLL’ were cultured in vitro to generate an embryogenic callus, from which multiple independent clones were regenerated via somatic embryogenesis. Regenerated plantlets (somaclones) were grafted to Swingle citrumelo rootstock and grown in the field for evaluation. Sweet orange clone ‘OLL-8’ was the most precocious bearing clone among the somaclone population, and thus the first to be selected for release, based on its stable propagation and outstanding qualities. ‘OLL-8’ produces high yields of high quality fruit, with exceptional flavor and juice color. It is expected to make a significant contribution to the sweet orange portfolio available to the not-from-concentrate juice producers in Florida and around the world.