Ki-oon is a French manga publisher with its head office in the 8th arrondissement of Paris.

[1] It was founded in October 2003 by Cécile Pournin and Ahmed Agne.

It released its first manga in March 2004, the first volume of Element Line.

The name "Ki-oon" comes from an onomatopoeia meaning "having the heart inflated with emotion".

With an increase in revenue of 80% in 2009, Ki-oon is in 2010 the most important independent publisher of manga in France.