Toad (known as Kinopio in Japanese releases) is a humanoid mushroom in games of the Super Mario Bros. series by Nintendo. Like many characters in Nintendo games related to Mario, Toad is both a unique character called "Toad" and a specimen of an entire, homonymous race. For instance, in Paper Mario, there is an entire race of Toads who live in Toad Town. Toads, the general collective name of the "mushroom people" found in the Mushroom Kingdom, are a sapient, anthropomorphic mushroom race, with a peaceful, human-following monarchistic culture.

He and others like him made their debut in Super Mario Bros. (called merely "Mushroom Retainer") but didn't have a name until Super Mario Bros 2. It is believed that his name originated from the word "toadstool," another name for a mushroom. Toad is a loyal mushroom retainer, a servant and companion to Princess Peach Toadstool. He is also a good friend of Mario and Luigi.

Apart from SMB2 and the Mario Kart series, where he is a light, high acceleration driver, Toad is seldom a playable character or protagonist - more often officiating, such as in the Mario Party series, or helping other characters (i.e. Mario) out.

Toad was however the hero of Wario's Woods where he had to line up then blow up strange creatures in a Nintendo puzzle game. His partners were Cathrine, a Birdo and Wanda but his connection to them is unknown.

Toad is a playable character in multiple games, including Super Mario Bros. 2, Wario's Woods, Super Mario Kart, Mario Kart 64, Mario Kart: Super Circuit, Mario Kart: Double Dash!!, Mario Golf, Mario Tennis, Mario Party 5, and Mario Party 6.

In Super Smash Bros. Melee, Toad makes two cameo appearances. He is both a trophy and a living shield held out as part of Princess Peach's B button attack. As a shield, Toad reflects damage back to the attacker.

In Mario Kart: Double Dash!!, Toadette, the female counterpart of Toad, was introduced.