The rules of lacrosse govern games and equipment used. US Lacrosse, the National Federation of State High School Associations (NFHS) and the NCAA write rules for our sport, as per the following breakout. The organizations often work together on rule development and player safety.
- US Lacrosse: youth rules for boys and girls, high school rules for girls, non-varsity collegiate rules for women, post-collegiate rules for men and women
- NFHS: high school rules for boys
- NCAA: varsity collegiate rules for men and women