Maritime flags
English: This is a gallery of maritime flags — flags designated for use at sea.
Civil and merchant ensigns 
Notes
State ensigns 
Naval ensigns 
Jacks
- Bahamas (civil)
- Netherlands (civil)
- Netherlands (military)
- Pakistan (naval)
- United Kingdom (military)
- United Kingdom (civil)
- United States (military)
- United States (civil)
Yacht ensigns 
- Åland
(Club Emblem placed in Canton) - Chile
(Internal Waters only) - Finland
(Club Emblem placed in Canton) - German Empire
(Internal Waters only) - Ireland
(Internal Waters only) - New Zealand
(Internal Waters only) - Northern Ireland
(Internal Waters only) - Poland
(Internal Waters only) - Thailand
(Internal Waters only) - United States of America
(Internal Waters only) - United States of America
(Internal Waters only)
Distinguishing marks
Flown by United States Government ships subordinate to these services to distinguish them from ships subordinate to the United States Navy, with which they share a common ensign.
- United States Coast and Geodetic Survey
(1899–1970)
House flags
Coastwise emblem
Used by ships which engages in coastwise trade, or transport of passenger or goods between two local ports, in the Philippines.

