The acronym CATS may refer to: CATS (software), electronic design automation software CATS (trading system), Computer Assisted Trading System, an automated trading system developed by the Toronto Stock Exchange CATS pipeline, a natural gas pipeline in North Sea CATS, a character from Zero Wing known for speaking the phrase "All your base are belong to us" Central Autónoma de Trabajadores Salvadoreños, a trade union in El Salvador Charlotte Area Transit System, the regional tr… (More on Cats)