自然步道（Natural Trail）指的是一条植物相、动物相丰富、自然景观优美，甚至拥有许多人文历史或特殊地质等背景，这样可同时兼具休闲、教育与保育功能的步道

一般国家公园均有设立自然步道，提供给到园参访的游客旅游休憩。对于都市居民来说，到一般市区的郊山步道、农园古道、都会公园或校园生态步道，也都是做亲近自然、体验生态环境最简便的方法。以台北市为例，除了阳明山国家公园规划的十二条步道外，近郊有圆通寺、仙迹岩、芝山岩、军舰岩、唭哩岸、天母古道等郊山步道；大安森林公园、关渡自然公园、中正纪念堂；或是台大校园等校园生态步道以上各类步道均可以称作自然步道。

An educational trail (or sometimes educational path), nature trail or nature walk is a specially developed hiking trail or footpath that runs through the countryside, along which there are marked stations or stops next to points of natural, technological or cultural interest. These may convey information about, for example, flora and fauna, soil science, geology, mining, ecology or cultural history. Longer trails, that link more widely spaced natural phenomena or structures together, may be referred to as themed trails or paths.