Prehistoric epic 10,000 BC has landed at the top of the Australian box office chart in its first week of release.

David Schwimmer's romantic comedy Run, Fat Boy, Run leaps nine places to second, while last week's number one Meet the Spartans falls to fourth.

Rambo falls four places to nine, while Australian autism drama The Black Balloon is another new entry at ten.

The top ten in full:

1. (-) 10,000 BC - $2,058,395
2. (11) Run Fat Boy Run - $852,068
3. (2) The Bucket List - $802,255
4. (1) Meet the Spartans - $589,536
5. (3) Jumper - $453,325
6. (4) Definitely, Maybe - $293,586
7. (7) Juno - $284,660
8. (6) We Own the Night - $266,056
9. (5) Rambo - $239,885
10. (-) The Black Balloon - $221,103