In August 2006, Warner Bros. announced 300's release date as March 16, 2007, but in October the release was moved forward to March 9, 2007.
Pada bulan Agustus 2006, Warner Bros mengumumkan 300 ini tanggal rilis tanggal 16 Maret 2007, tetapi pada bulan Oktober rilis itu bergerak maju ke 9 Maret 2007.