| Rank | Country | Sex ratio |
93 | Brazil | at birth: 1.05 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 0.98 male(s)/female 65 years and over: 0.73 male(s)/female total population: 0.98 male(s)/female (2011 est.) |
| British Indian Ocean Territory | void |
94 | British Virgin Islands | at birth: 1.05 male(s)/female under 15 years: 1.03 male(s)/female 15-64 years: 1.05 male(s)/female 65 years and over: 1.07 male(s)/female total population: 1.05 male(s)/female (2011 est.) |
147 | Brunei | at birth: 1.047 male(s)/female under 15 years: 1.06 male(s)/female 15-64 years: 0.99 male(s)/female 65 years and over: 0.94 male(s)/female total population: 1 male(s)/female (2011 est.) |
40 | Bulgaria | at birth: 1.06 male(s)/female under 15 years: 1.05 male(s)/female 15-64 years: 0.97 male(s)/female 65 years and over: 0.68 male(s)/female total population: 0.92 male(s)/female (2011 est.) |
175 | Burkina Faso | at birth: 1.03 male(s)/female under 15 years: 1.01 male(s)/female 15-64 years: 1 male(s)/female 65 years and over: 0.64 male(s)/female total population: 0.99 male(s)/female (2011 est.) |
41 | Burma | at birth: 1.06 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 0.99 male(s)/female 65 years and over: 0.77 male(s)/female total population: 0.99 male(s)/female (2011 est.) |
176 | Burundi | at birth: 1.03 male(s)/female under 15 years: 1.01 male(s)/female 15-64 years: 0.97 male(s)/female 65 years and over: 0.67 male(s)/female total population: 0.98 male(s)/female (2011 est.) |
153 | Cambodia | at birth: 1.045 male(s)/female under 15 years: 1.02 male(s)/female 15-64 years: 0.95 male(s)/female 65 years and over: 0.6 male(s)/female total population: 0.96 male(s)/female (2011 est.) |
177 | Cameroon | at birth: 1.03 male(s)/female under 15 years: 1.02 male(s)/female 15-64 years: 1.01 male(s)/female 65 years and over: 0.85 male(s)/female total population: 1.01 male(s)/female (2011 est.) |
63 | Canada | at birth: 1.056 male(s)/female under 15 years: 1.05 male(s)/female 15-64 years: 1.02 male(s)/female 65 years and over: 0.78 male(s)/female total population: 0.98 male(s)/female (2011 est.) |