Is there a Super Smash Bros.. for Nintendo DS?

No such thing has been spoken about or even hinted at by Nintendo. With the 3DS set to launch before March of 2011, there is not enough time for a Super Smash Bros. game for the Nintendo DS to be developed.

B. Actually no there is not, but 2 things. There is a super smash bros homebrew for DS and there is a game exactly/similar to the game Super Smash Bros.

The similar game is called Jump Super Stars, and the sequel Jump Ultimate Star. Its basically a Super smash bros but a brawler of the famous Manga called Shonen Jump.