Lucius Varius Ambibulus (full name: Quintus Planius Sardus Lucius Varius Ambibulus), was a Roman senator of the 2nd century AD who occupied a number of offices in the imperial service, as well as serving as suffect consul in either 132 or 133.
His cognomen "Ambibulus" was described by Ronald Syme as "peculiar and uncommon"; he could only count five examples of its use in inscriptions found at Rome, and one more in North Africa.
[2] However, Werner Eck and Margaret Roxan present another possibility, based on a military diploma owned by Martin Schøyen, that mentions an equestrian "Q. Planius Sardus", the commander of ala I Ulpia contrariorum milliaria.
In the order Ambibulus held these offices, he began his career in his teenage years as one of the decemviri stlitibus iudicandis, which was one of the four boards comprising the vigintiviri.
After stepping down as praetor, Ambibulus served as praefectus frumentus dandi ex senatus, then was selected by the sortition to be proconsular governor of Macedonia in 124/125.