The lex Gabinia (Gabinian Law), lex de uno imperatore contra praedones instituendo (Law establishing a single commander against raiders) or lex de piratis persequendis (Law on pursuing the pirates)[1] was an ancient Roman special law[2] passed in 67 BC, which granted Pompey the Great proconsular powers in any province within 50 miles of the Mediterranean Sea without holding a properly elected magistracy[3] for the purpose of combating piracy. It also gave Pompey the power to appoint many legates and significant financial resources.[2] The law was proposed and passed by the tribune Aulus Gabinius.