Dekel Valtzer (born 3 October 1984) is an Israeli former professional tennis player.

[1] Valtzer was the 2005 winner of the Israeli Championships, defeating Amir Weintraub in the final.

[2] In 2006 he was called into the Israel Davis Cup team for a tie against Great Britain in Eastbourne and played a dead rubber reverse singles, which he lost to Alan Mackin.

[3] On the professional tour, Valtzer had a best singles ranking of 388 in the world and won two ITF Futures titles.

As a doubles players he won a further six Futures tournaments, with a highest ranking of 331.