Tanjiro Kamado (竈門炭治郎 Kamado Tanjirō) is the main protagonist of Demon Slayer: Kimetsu no Yaiba. He is a Kanoe-ranked member of the Demon Slayer Corps, who joined for the sake of hunting down the one responsible for the murder of his family and his sister's transformation into a Demon.
Tanjiro is a young man with rather tanned skin and an athletic physique. He has ruffled, black hair with burgundy tips, combed back to expose his forehead, and wide, dark red eyes with white pupils that appear lighter around the lower section of his irises. He also has a scar on the top left of his forehead, which he received when he protected his younger brother from a falling brazier.[5] The scar originally looked somewhat like a graze until his fight with the Hand Demon during the Final Selection, after which it develops into his Demon Slayer Mark. It is noted that his hands are visibly rougher for someone his age, as a result of his rigorous training under Sakonji Urokodaki. Tanjiro looks remarkably similar in appearance to his ancestor Sumiyoshi, possessing the same facial structure, eyes, and hairstyle as him, although Sumiyoshi's hair was longer, about shoulder-length and would be tied in a ponytail behind his head.

Tanjiro first appears wearing a checkered, black-and-sea-foam-green haori over a white robe and black pants. He occasionally sports a turquoise scarf and is seen with circular, white bands looped around his calves. He also wears a distinct pair of hanafuda earrings, with the image of a white-and-red flower. His hair is also kept tied back in small ponytail or bun; as he trains with Sabito and Makomo, his hair grows to his shoulders.

During the Final Selection, Tanjiro wears a blue, cloud-patterned jinbei-styled kimono and black pants, nearly identical to Sakonji's outfit. He still wears his hanafuda earrings, but his hair is cut extremely short and remains the same length since. Similar to the rest of the apprentices that were trained under Sakonji, Tanjiro wears a hand-carved fox mask crafted from his master on the left side of his head. The mask has red accents on the eyes, ears, and spots on each corner of its mouth. On the upper right corner of the mask, there is a sun-shaped design that likely symbolizes the scar on his forehead.

After becoming a Demon Slayer, Tanjiro wears the standard Demon Slayer uniform, a dark-brown gakuran jacket, a white belt, baggy pants that extend into tabi socks, a pair of zōri with red straps, and bands of white cloth wrapped tightly around his calves, all beneath his signature checkered haori. He carries a large wooden box on his back (which was a gift to him from Sakonji Urokodaki), where his sister sleeps as they travel during the day.