Sera (世羅郡,Sera-gun) is adistrict located inHiroshima Prefecture,Japan.

As of 2020, the district has an estimatedpopulation of 15,125 and adensity of 54.38 persons per km². The total area is 278.1 km².^[1]

• Sera

• On October 1, 2004 all three towns in the district merged into the single expanded town of Sera. The other two former towns wereKōzan andSeranishi.

34°36′54″N133°00′32″E / 34.615°N 133.009°E /34.615; 133.009