This form is never used in Russia. In fact, the only short form of Natalia is Natasha.

I agree with the above user in that I've never heard of Tasha used as a nickname for Natalia. But Natasha is not the only possible nickname. I'm Russian, and my friend, whose full name is Natalia, goes by Nata, another nickname for Natalia.

Tasha is a Russian nickname for Natasha, even if you have never heard it used before. Tasha is of Russian origin.

I've also heard it spelled 'Tosha'.

Wife of Pushkin - Natalia Goncharov, in the family called Tasha.

There is a foreign exchange student at school called Tasha, short for Tashatai.

Tasha is the name of a character in the children's show Backyardagains.

Natasha is my name, and I like to be called this nickname because it means people don't call me Natalie or Nicola. I've even had to put up with names like Rebecca and Samantha, just because they all have 3 syllables.

Lt. Tasha Yar (sometimes called 'Natasha' though I believe it has been established that 'Tasha' is in fact her given name) is Chief of Security aboard the USS Enterprise 1701-D during the first seasons of the television show Star Trek: The Next Generation.

Love this for a nickname for "Natasha", so cute and edgy and lovely.

Tasha (and Tosha) is not a name I would choose, but it's not so bad. I have only known one Tasha. I don't think it's a very popular name in the USA.

I think the name Tasha is stylish and pretty. Much better than Sasha in my opinion!

Natasha "Tasha" Tah is a singer/songwriter.

Occasionally used in Russia as a nickname for Tatyana, but nowhere near as often as Tanya.

The meaning of the name Tasha is "Christmas Child" or "Festive".

Tasha is used, although rarely, as a diminutive for both Natalya and Tatyana.