The Nassau County Courthouse, also known as the Old Nassau County Courthouse and the Historic Nassau County Courthouse, is a historic two-story red brick courthouse building located at 416 Centre Street in Fernandina Beach, Nassau County, Florida.

The courthouse was built in 1891 and features cast-iron Corinthian columns and a massive bell tower and steeple.

Meneely and Co. of West Troy, New York, cast the bell for the tower, which was used as a fire alarm for many years.

[1] In 2002, the building was restored and renovated by The Auchter Company of Jacksonville.

Also, in 2002, construction began on a new Judicial Annex at 76347 Veteran's Way in Yulee.