A1one (1981; pronounced /əˈloʊn/ alone; Persian: تنها, romanized: Tanhâ) is the pseudonym of Karan Reshad, an Iranian visual artist who pioneered graffiti and street art in Iran.

[6][7] Already involved in urban arts in general, he met the rapper, Nima, in 2005, who told him everything about the graffiti culture, which triggered A1one's desire to grow in that direction.

With his public space art, he describes his view on Iranian society and puts himself regularly in danger.

"[9]In 2007, he was invited to illustrate the cover of a book, Young and Defiant in Iran; a contemporary ethnographic work by Shahram Khosravi.

[6] By 2010, A1One was an established name within Tehran's youth culture and a key figure in the emergence of Iranian street art.

The artist has been working on a distinctly Iranian style of calligraffiti, which is "a fusion of hip-hop graffiti and Persian typography".