Ari Matti (full name Ari Matti Mustonen, the Estonian stand‑up comedian) is listed as approximately 6′ 3¼″ tall, which is about 1.91 meters.

Public profiles that include his acting and comedy credits give his height as “6′ 3¼″ (1.91 m),” and there are no widely cited alternative measurements, so 1.91 m is the best available public figure for how tall Ari Matti is.