Hélder Marino Rodrigues Cristóvão (born 21 March 1971), known simply as Hélder, is a Portuguese retired footballer who played as a central defender, and the current coach of Benfica B.
Born in Luanda, Portuguese Angola, Hélder first attracted attention as a G.D. Estoril Praia player, moving to S.L. Benfica for the 1992–93 season where he would stay the following four 1/2 years, mainly as a starter. In December 1996 he signed for Deportivo de La Coruña, playing 22 La Liga matches in only six months as the club finished in third position.
In November 1999 Hélder joined Newcastle United in the Premier League on loan, making 12 official appearances and scoring once, against Sunderland. In that season the Galicians went on to conquer their first league title, with the player failing to contribute in that competition; subsequently he returned to Depor, appearing very rarely in his last year, which ended in conquest of the Copa del Rey.
For the 2002–03 campaign, aged 31, Hélder returned to Benfica, playing there for two more years (being used in average of 20 league matches and winning one Portuguese Cup) and joining Paris Saint-Germain F.C. the following season, where he teamed up with compatriot Pauleta. He played his last year for Greece's AEL 1964 FC in 2005–06, appearing rarely in the top division and retiring at the end of the season.
In the 2009 summer Cristóvão began a coaching career, precisely with his first club Estoril (in the second division). On 28 September, merely two months after being appointed, he was fired.
Hélder appeared 35 times for the Portuguese national team, scoring three goals. His first game was on 12 February 1992 in a 2–0 win over the Netherlands in a friendly match, and his last a 0–4 loss to France in Paris on 25 April 2001, in another friendly.
Hélder represented the nation at UEFA Euro 1996, appearing in all four matches for the quarterfinalists as he started alongside Fernando Couto.