Hiking apparel is clothing, footwear, headwear, and other items worn that are suitable for hiking, including trousers, sweaters, underwear, and hiking boots.

Hiking apparel is usually selected to suit predicted weather conditions, taking into account UPF rating (Ultraviolet Protection Factor), weight, water and wind resistance.

Today's hiking apparel is more advanced than previous years, having material that can be wind resistant, water-repellent and yet breathable, and lightweight. Some hiking apparel is designed to be "breathable", drawing moisture away from the body while protecting from the weather.