James Cameron's 3D re-release of his 1997 blockbuster, back in cinemas to mark the 100-year anniversary of Titanic's ill-fated maiden voyage, pulls in £2.8 million to secure first place ahead of Jennifer Lawrence's action movie.
Titanic's 3D opening haul will be added to the £68m the romantic epic earned from its initial UK theatrical run in 1998.
The Hunger Games's £2.39 million gross puts it just ahead of family adventure Mirror Mirror, which collects £2.38 million over the Easter break.
The Pirates! In an Adventure with Scientists falls a place to number four, while last week's runner-up Wrath of the Titans completes the top five with £1.3 million.
Elsewhere, Henry Cavill's latest movie The Cold Light of Day debuts at number seven and Bollywood sequel Housefull 2 lands at number ten.
The UK box office top ten in full:
1. (-) Titanic - £2,856,540
2. (1) The Hunger Games - £2,394,782
3. (-) Mirror Mirror - £2,389,033
4. (3) The Pirates! In an Adventure with Scientists - £2,166,162
5. (2) Wrath of the Titans - £1,368,131
6. (4) 21 Jump Street - £845,869
7. (-) The Cold Light of Day - £503,985
8. (6) The Best Exotic Marigold Hotel - £451,307
9. (5) StreetDance 2 - £424,833
10. (-) Housefull 2 - £396,475
Watch the trailer for Titanic below:
> Titanic Billy Zane interview
> View more Titanic videos