蕈类（注音：ㄒㄩㄣˋㄌㄟˋ；拼音：xùn lèi）是大型、高等的真菌，子实体通常肉眼可见。菌丝具横隔壁，将菌丝分隔成多细胞。通称蘑菇、菇类。

又蘑菇一词通常是对蘑菇属（Agaricus）部分食用菌的总称，常见的包括双孢蘑菇（Agaricus bisporus）、大肥菇（Agaricus bitorquis）、蘑菇（Agaricus campestris）等。一般栽培的蘑菇是指双孢蘑菇。此外，蘑菇也是对真菌有性生殖阶段的真菌子实体的俗称。

A mushroom (or toadstool) is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source.

The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi (Basidiomycota, Agaricomycetes) that have a stem (stipe), a cap (pileus), and gills (lamellae, sing. lamella) on the underside of the cap. These gills produce microscopic spores that help the fungus spread across the ground or its occupant surface.