环刃（天城文：चक्रं；英语：Chakram），又可称为飞轮、轮刃、战轮、圆月轮或圆刃，是一种圆环型或半月型锋刃武器，可以用来砍杀或投掷的武器。

环刃是印度的一种民族武器。最原先的起源是指的是脉轮、轮、或圆。16-19世纪时，锡克教徒也有使用过。典型的环刃是一个轻巧的金属圆环，重仅150-500克，直径约为10-30公分，环的外围磨得锋利无比。使用时以手指套在环内，将轮旋转之后扔出去。射程有40-50公尺之远，在30公尺的距离上能砍断直径2公分粗的竹子。环刃经常抛出是垂直而非水平，可轻易切断敌人的手臂或双腿。

The chakram (Devanāgarī: चक्रं; Panjabi: chakkar; Malay:cakeram) is a throwing weapon from India. It is circular in shape with a sharpened outer edge and ranges in size from approximately 12–30 centimetres (4.7–11.8 in) in diameter. It is also known as chalikar‌ meaning "circle", and was sometimes referred to in English writings as a "war-quoit". The chakram is primarily a throwing weapon but can also be used hand-to-hand. A smaller variant called chakri was worn on the wrist. A related weapon is the chakri dang, a bamboo staff with a chakri attached at one end.