Johannis may refer to:
Johannis Winar (born 1970), Indonesian basketball coach and former player Klaus Johannis (born 1959), Romanian teacher and politician Olaus Johannis Gutho (died 1516), Bridgettine monk the Johannis or Iohannis, a Latin epic poem in honour of John Troglita, by Flavius Cresconius Corippus
See also St. Johannis (disambiguation) Johannis L. Van Alen Farm