Welker Marçal de Almeida (born 24 September 1986), commonly known as Kieza, is a Brazilian professional footballer who plays for Rio Branco as a striker.
Born in Vitória, he was signed on February 20, 2010 by Cruzeiro Esporte Clube who ended his contract in January 2010 with Fluminense.
In 2011, Kieza moved from Cruzeiro to Campeonato Brasileiro Série B side Náutico on a season-long loan deal. He helped Náutico being promoted to the Série A, scoring 21 goals in the season which allowed him to become Top goalscorer of this tournament.
In April 2019, he joined Fortaleza on loan.