Attica and Boeotia Prefecture was a prefecture of Greece. It was first established in 1833, abolished in 1836 and reconstituted in 1845. The prefecture was split up into separate Attica and Boeotia prefectures in the 1899 reform, but this was reversed in 1909. The prefecture finally ceased to exist in 1943, when it was again split up into Attica and Boeotia (Law 223Α/26-7-1943).