White and green flags
2 countries have a white and green flag, with no other significant colour: Nigeria, Pakistan. 42 other flags also contain these colours, plus others.
White and green, plus other colours
Afghanistan
Algeria
Bulgaria
Burundi
Central African Republic
Comoros
Côte d’Ivoire
Djibouti
Dominica
Equatorial Guinea
Gambia
Guyana
Hungary
India
Iran
Ireland
Italy
Jordan
Kenya
Kuwait
Lebanon
Lesotho
Madagascar
Mexico
Mozambique
Myanmar
Namibia
Niger
Oman
Palestine
San Marino
Seychelles
Sierra Leone
South Africa
South Sudan
Sudan
Suriname
Syria
Tajikistan
United Arab Emirates
Uzbekistan
Zimbabwe
Other colour combinations
red, white and bluered and whitered, green and yellowred, white and greenred, blue and yellowwhite and blueblue and yellowred, white, green and blackred and greenred, yellow and blackblue, green and yellowwhite, blue and greenred and yellowwhite, green and orangered, white and blackred, white, blue and greenred and bluered and blackred, white, blue and blackred, blue and greenred, white, green and yellowwhite, blue and blackred, blue, green and yellowred, green and blackred, green, yellow and black