| Country | Flag description |
| Finland | white with a blue cross extending to the edges of the flag; the vertical part of the cross is shifted to the hoist side in the style of the Dannebrog (Danish flag) |
| France | three equal vertical bands of blue (hoist side), white, and red; known as the "Le drapeau tricolore" (French Tricolor), the origin of the flag dates to 1790 and the French Revolution; the design and/or colors are similar to a number of other flags, including those of Belgium, Chad, Ireland, Cote d'Ivoire, Luxembourg, and Netherlands; the official flag for all French dependent areas |
| French Polynesia | two narrow red horizontal bands encase a wide white band; centered on the white band is a disk with a blue and white wave pattern on the lower half and a gold and white ray pattern on the upper half; a stylized red, blue, and white ship rides on the wave pattern; the French flag is used for official occasions |
| French Southern and Antarctic Lands | the flag of France is used |
| Gabon | three equal horizontal bands of green (top), yellow, and blue |
| Gambia, The | three equal horizontal bands of red (top), blue with white edges, and green |
| Gaza Strip | void |
| Georgia | white rectangle, in its central portion a red cross connecting all four sides of the flag; in each of the four corners is a small red bolnur-katskhuri cross; the five-cross flag appears to date back to the 14th century |
| Germany | three equal horizontal bands of black (top), red, and gold |
| Ghana | three equal horizontal bands of red (top), yellow, and green with a large black five-pointed star centered in the yellow band; uses the popular pan-African colors of Ethiopia; similar to the flag of Bolivia, which has a coat of arms centered in the yellow band |
| Gibraltar | two horizontal bands of white (top, double width) and red with a three-towered red castle in the center of the white band; hanging from the castle gate is a gold key centered in the red band |
| Greece | nine equal horizontal stripes of blue alternating with white; there is a blue square in the upper hoist-side corner bearing a white cross; the cross symbolizes Greek Orthodoxy, the established religion of the country |
| Greenland | two equal horizontal bands of white (top) and red with a large disk slightly to the hoist side of center - the top half of the disk is red, the bottom half is white |
| Grenada | a rectangle divided diagonally into yellow triangles (top and bottom) and green triangles (hoist side and outer side), with a red border around the flag; there are seven yellow, five-pointed stars with three centered in the top red border, three centered in the bottom red border, and one on a red disk superimposed at the center of the flag; there is also a symbolic nutmeg pod on the hoist-side triangle (Grenada is the world's second-largest producer of nutmeg, after Indonesia); the seven stars represent the seven administrative divisions |
| Guam | territorial flag is dark blue with a narrow red border on all four sides; centered is a red-bordered, pointed, vertical ellipse containing a beach scene, outrigger canoe with sail, and a palm tree with the word GUAM superimposed in bold red letters; US flag is the national flag |
| Guatemala | three equal vertical bands of light blue (hoist side), white, and light blue with the coat of arms centered in the white band; the coat of arms includes a green and red quetzal (the national bird) and a scroll bearing the inscription LIBERTAD 15 DE SEPTIEMBRE DE 1821 (the original date of independence from Spain) all superimposed on a pair of crossed rifles and a pair of crossed swords and framed by a wreath |
| Guernsey | white with the red cross of Saint George (patron saint of England) extending to the edges of the flag and a yellow equal-armed cross of William the Conqueror superimposed on the Saint George cross |
| Guinea | three equal vertical bands of red (hoist side), yellow, and green; uses the popular pan-African colors of Ethiopia |
| Guinea-Bissau | two equal horizontal bands of yellow (top) and green with a vertical red band on the hoist side; there is a black five-pointed star centered in the red band; uses the popular pan-African colors of Ethiopia |
| Guyana | green, with a red isosceles triangle (based on the hoist side) superimposed on a long, yellow arrowhead; there is a narrow, black border between the red and yellow, and a narrow, white border between the yellow and the green |
| Haiti | two equal horizontal bands of blue (top) and red with a centered white rectangle bearing the coat of arms, which contains a palm tree flanked by flags and two cannons above a scroll bearing the motto L'UNION FAIT LA FORCE (Union Makes Strength) |
| Heard Island and McDonald Islands | the flag of Australia is used |