The name Nadia is a girl's name of Russian origin meaning "hope". Nadia is ranked #400 on our popularity charts and is often added to lists like Names That Mean Hope and discussed in our forums with posts like "Names on NB that make you go WOW!".
From the experts:
Nadia, an exotic but accessible Slavic favorite, has a strong run of popularity in the US in the early 2000s, partially thanks to the character on Lost called Nadia but actually named Noor, but it's since slumped down the rankings. An earlier inspiration was Romanian gymnast Nadia Comaneci, who won the 1976 Olympics. Nadia is actually a short form of Nadezhda, the name of Lenin's wife, though more Westerners will relate it to the familiar Natalya or Natasha.
Octomom Suleman spells her first name Nadya, as in the Queen Nadya character in Noel Coward's play The Queen was in the Parlour.