The 2006–07 Liga I was the eighty-ninth season of Liga I, the top-level football league of Romania. Season began on 28 July 2006 and ended on 23 May 2007.
Teams
Eighteen teams played in the 2006–07 season. Four teams were from Moldova, four clubs from Transylvania, one from Dobruja and nine from Wallachia four of them coming from the country's capital city Bucharest.
^Capacity of Giulești-Valentin Stănescu Stadium has been reduced from 19,100 to 11,704 due to advanced degradation of the resistance structure of the South End.
^CFR Cluj was relocated to Unirea Stadium from Dej for the first five home matches of this season because CFR Stadium was under renovations.
^Delta Tulcea, the winner of the Liga II, Seria I, was denied the right to participate in next season of Liga I because it failed to meet the licensing requirements, therefore Ceahlăul Piatra Neamţ was spared from relegation.