Top 10 Pairs of Countries with Similar Flags

The Top Ten
1 Romania and Chad

Chad's is a bit darker.

2 Ivory Coast and Ireland
3 Poland and Indonesia and Monaco
4 Mexico and Italy
5 Bahrain and Qatar

Bahrain flag has only 5 of those triangular things but Qatar has lot of them. Bahrain flag is red in colour, but Qatar flag is maroon/magenta in colour. Other than that, they are the same.

6 Costa Rica and Thailand
7 Iceland and Norway
8 Tuvalu and Fiji
9 Australia and New Zealand
10 Luxembourg and Netherlands
The Contenders
11 United States and Malaysia
12 Bangladesh and Japan
13 Peru and Canada
14 Norway and Iceland

Different flags. same for ivory coast and Ireland. and germany and Belgium. and everything on this list

15 Germany and Belgium
16 Monaco and Poland
17 Latvia and Austria
18 Australia and Bermuda
19 Yemen and Syria
20 China and Vietnam
21 Netherlands and Russia
22 Columbia and Ecuador
23 Niger and India
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