"His contract was for one year and it ended", Angolan Football Federation vice-president Joao Lusevikueno said.
But it was unclear whether the 40-year-old midfielder was planning to retire. He hinted at hanging up his boots after a shoulder injury in October ended his season early and threatened to end his career.
The 1999 World Footballer of the Year and European Footballer of the Year was third-highest goalscorer in the league, although Kabuscorp finished fourth.
Rivaldo left Brazilian outfit Sao Paulo in January after another chapter in a globe-trotting career that took him to Spain, Italy, Greece and Uzbekistan before he returned home last year.
Attacking midfielder Rivaldo, who said the fact that Brazil and Angola are Portuguese-speaking countries played a big part in his decision, was a member of Brazil's 2002 FIFA World Cup™-winning team and played for Barcelona and AC Milan in his heyday.