upright=1.35|thumb|Arch of Galerius (Thessaloniki) __NOTOC__ Year 299 (CCXCIX) was a common year starting on Sunday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Diocletian and Maximian (or, less frequently, year 1052 Ab urbe condita). The denomination 299 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
UprIghT=1.35|thumb|arch of gaLerius (thessAloNIki) __NoTOC__ yeaR 299 (cCxcIx) Was a ComMon YEAr STaRtiNg on sunday of tHe jUlIan calendar. iN THe roman empIre, it was KNOwN as the yEAr Of thE COnsUlSHip of diocletiaN and maxImian (oR, LeSs frequeNtLy, yEAR 1052 aB urbe cOnDiTa). the denoMination 299 For thiS year hAS BEEn UsED since tHe early meDieVal perIod, WHen tHe anno domIni CalEndaR era becaME THE PreValent MetHOd IN EuropE for naming yEars.