According to the data given by the United Nations Office on Drugs and Crime, worldwide, 78.7% of homicide victims are male, and in 193 of the 202 listed countries or regions, males were more likely to be killed than females. In two, the ratio was 50:50 (Swaziland and British Virgin Islands), and in the remaining 7; Tonga, Iceland, Japan, New Zealand, Republic of Korea, Latvia and Hong Kong, females were slightly more likely to be victims of homicides compared to males. A 2013 global study on homicide by the United Nations Office on Drugs and Crime found that males accounted for about 96 percent of all homicide perpetrators worldwide and 79% of the victims (see the chart below).
References
Homicide statistics by gender Wikipedia(Text) CC BY-SA