Montenegro
What the source says
Referenced, awaiting primary-source reviewOfficially adopted on 13 July 2004. Red field with gold border containing the coat of arms. The flag was based on an old royal banner from the Kingdom period (1910-1918). [The article provides no explicit meaning for the colours.]
Referenced, not verified: a secondary work states this, and the document that constitutes the flag has not been read for this entry. What the marks mean.
Colors
Symbolism and history(r1)
A golden double-headed eagle bearing a lion beneath a crown centers a red field bordered in gold, adopted in 2004 and based on an old royal banner from the Kingdom of Montenegro period.
Most similar flags
The 6 closest of the 194 other national flags, ranked by a similarity index computed from the flag images themselves. The number is that index, 0–100 — not a claim that the two flags are “X% identical”.
- North Macedonia82
near-identical colour proportions.
- Kyrgyzstan78
the same colours in similar amounts.
- Vietnam78
the same colours in similar amounts.
- China74
the same colours in similar amounts.
- Morocco73
the same colours in similar amounts.
- Türkiye72
the same colours in similar amounts.
From this entry, not from the index: Shares the double-headed-eagle motif with Albania's flag, though Montenegro's eagle sits on a gold-bordered red field with a crowned lion beneath it, rather than a plain red field.
Computed at build time: each flag is rasterised to 64x48, and the score is 0.55 × colour overlap + 0.45 × structure. A different weighting would rank these differently. How the index works.
References — not verification
(r1) Referenced to Flag of Montenegro (Wikipedia (English)) on 2026-07-17. States the adoption year, which colors the flag has and the symbolism and history on this page. The passage it states them in is quoted at the top of this entry.
Further reading: Flag of Montenegro on Wikipedia