“聚众斗殴”常见的英文表达是 “affray”（尤其在英式英语中较为常用，指在公共场所发生的、引起公众恐慌的斗殴行为） ，也可用 “brawl” （侧重指喧闹、混乱的斗殴、争吵） 或者更正式的表述 “engage in a group fight” 或 “participate in a mass brawl” 来准确传达“聚众斗殴”这一行为。
示例：
Several people were arrested for affray.（几人因聚众斗殴被捕。）
A brawl broke out between two rival gangs.（两个敌对帮派之间爆发了聚众斗殴事件 。）
They were charged with engaging in a group fight.（他们被指控聚众斗殴。）