Oskar Metsavaht (Caxias do Sul, Brazil, 1961)[1] is a Brazilian artist, academic degree in medicine, fashion designer[3] environmental activist and Amazon guardian.

[11] He graduated from the University of Rio de Janeiro with a degree in medicine (trained as orthopedic surgeon)[12][1][7] and later worked as a physician in poor communities.

[16][12][17] According to the WhiteWall Magazine, in 2018, "Osklen had 47 percent sustainable pieces in its collection from 38 suppliers that the company had developed for the last 20 years".

In 2013, the exhibition was also shown at BA Photo Art, Recoleta Cultural Center, Buenos Aires and at the Quintenz Gallery in Aspen.

For the latter, Oskar took an acting role and brought to life the final project developed by Cris, an artist portrayed by Selton Mello in a movie alongside Ralph Ineson and Seu Jorge.

In December 2017, Oskar opened OM.art, an experimental space that houses content for contemporary reflections on art, science, politics, economy and philosophy.

[20] In 2000, after encountering issues finding sustainable fabrics for his company, Metshavaht launched E-brigade, a movement intended to raise awareness and disseminate environmental information in Brazilian society.

[21][22][23] A number of sources report that the organization "identifies alternative (not prior used in manufacturing) materials found in different regions of Brazil to develop for people's use.