West Friesland or Westfriesland can refer to the following:
*
West Friesland (region), a contemporary region in the province of North Holland, Netherlands
*The same region as the
State of West Friesland in the Dutch Republic
*Occasionally, the region where the
West Frisian language is spoken, i.e., mostly the province of Friesland in the Netherlands
*
West Frisia, the western part of the historical region of Frisia
*''Westfriesland'', a Dutch ship of the line of 78/80 guns of the
Admiralty of the Noorderkwartier, built in c. 1666
*''Westfriesland'', a Dutch ship of the line of 90 guns of the
Admiralty of the Noorderkwartier, built in 1682
{{disambig, geo