Bouvet Island:
the flag of Norway is used

Brazil:
green with a large yellow diamond in the center bearing a
blue celestial globe with 27 white five-pointed stars (one for each
state and the Federal District) arranged in the same pattern as the
night sky over Brazil; the globe has a white equatorial band with
the motto ORDEM E PROGRESSO (Order and Progress)

British Indian Ocean Territory: white with six blue wavy horizontal stripes; the flag of the UK is in the upper hoist-side quadrant; the striped section bears a palm tree and yellow crown centered on the outer half of the flag

British Virgin Islands:
blue, with the flag of the UK in the upper
hoist-side quadrant and the Virgin Islander coat of arms centered in
the outer half of the flag; the coat of arms depicts a woman flanked
on either side by a vertical column of six oil lamps above a scroll
bearing the Latin word VIGILATE (Be Watchful)

Brunei:
yellow with two diagonal bands of white (top, almost double
width) and black starting from the upper hoist side; the national
emblem in red is superimposed at the center; the emblem includes a
swallow-tailed flag on top of a winged column within an upturned
crescent above a scroll and flanked by two upraised hands

Bulgaria:
three equal horizontal bands of white (top), green, and
red; the national emblem formerly on the hoist side of the white
stripe has been removed - it contained a rampant lion within a
wreath of wheat ears below a red five-pointed star and above a
ribbon bearing the dates 681 (first Bulgarian state established) and
1944 (liberation from Nazi control)

Burkina Faso:
two equal horizontal bands of red (top) and green with
a yellow five-pointed star in the center; uses the popular
pan-African colors of Ethiopia

Burma:
red with a blue rectangle in the upper hoist-side corner
bearing, all in white, 14 five-pointed stars encircling a cogwheel
containing a stalk of rice; the 14 stars represent the 14
administrative divisions

Burundi:
divided by a white diagonal cross into red panels (top and
bottom) and green panels (hoist side and outer side) with a white
disk superimposed at the center bearing three red six-pointed stars
outlined in green arranged in a triangular design (one star above,
two stars below)

Cambodia:
three horizontal bands of blue (top), red (double width),
and blue with a white three-towered temple representing Angkor Wat
outlined in black in the center of the red band