List of shipwrecks in March 1866

The list of shipwrecks in March 1866 includes ships sunk, foundered, grounded, or otherwise lost during March 1866.

25 March
{{shipwreck list item }}
 * ship=Wealands
 * flag={{flagcountry|UKGBI|civil}}
 * desc=The brig foundered in the Atlantic Ocean {{convert|50|nmi|km}} south west of the Isles of Scilly. Her crew were rescued by the brig Derize Jaillez ({{Flag|France}}}). Wealands was on a voyage from Sunderland, County Durham to Oporto, Portugal.