This is a list of surnames in which the description contains the keyword sea.
AdriaticoItalian Originally denoted a person who lived near the Adriatic sea.
DunbarScottish From the name of a town in East Lothian, Scotland, derived from Gaelic dùn meaning "fort" and barr meaning "summit", so called from its situation on a rock that projects into the sea.
FriesGerman Denoted someone from Frisia, an area along the coastal region of the North Sea stretching from Netherlands to Germany.
HalloranIrish From Irish Ó hAllmhuráin meaning "descendant of Allmhurán". The given name Allmhurán means "stranger from across the sea".
McNamaraIrish From Irish Mac Conmara meaning "son of Conmara". The given name Conmara is composed of cú "hound" and muir "sea".
NicchiItalian From the Italian word nicchio meaning "shell", possibly a nickname for people related to the sea.
PuglieseItalian From an adjectival derivative of Puglia, from Latin Apulia, a region of southeast Italy containing the boot heel and some of the coastline of the Adriatic Sea. It is a regional name for someone from that region.
SeaverEnglish From the unattested Old English given name Sæfaru, derived from the Old English elements sæ "sea, ocean" and faru "journey".
Seymour 2English From an English place name, derived from Old English sæ "sea" and mere "lake".
SjöbergSwedish From Swedish sjö (Old Norse sær) meaning "lake, sea" and berg meaning "mountain".
SjögrenSwedish From Swedish sjö (Old Norse sær) meaning "lake, sea" and gren (Old Norse grein) meaning "branch".
StrandNorwegian, Swedish, Danish From Old Norse strǫnd meaning "beach, sea shore". It was originally given to someone who lived on or near the sea.
Van der ZeeDutch Means "from the sea" in Dutch. The original bearer may have been someone who lived on the coast.