Marie Kondo (近藤 麻理恵) is a Japanese organizing consultant and author. Kondo's method of organizing is known as the KonMari Method, and one of the main principles is keeping only possessions which "spark joy."
Kondo's best-seller The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing has been published in more than 30 countries.
She was listed as one of the world's 100 most influential people by Time Magazine in 2015.
Personal website: http://konmari.com/en/
Book website: http://tidyingup.com/
App website: http://konmari-media.com/
Bio and photo from Goodreads.