OTL may stand for: Oradea Transport Local Over-the-line, a variant of softball played mostly in Southern California Over time limit Output transformerless, a vacuum tube amplifier topology Outside the Lines, an American sports television series focusing on off-the-field stories Oracle Template Library An emoticon representing a kneeling or bowing person Overtime loss in ice hockey Otl Aicher, a graphic designer and typographer South Airlines, by ICAO airline code Ottawa Tool Library On the Loose (outing club), an outing club for the Claremont Colleges in Claremont, California, United States Overland Telegraph Line between Adelaide and Darwin, Australia