List of sponsors debuting in Mario Kart DS

This a list of the sponsors that debuted in Mario Kart DS.

Fresh
Fresh is a sponsor that appears in Mario Kart DS. The logo consists of an image of a Cheep Cheep based on those from Super Mario Bros. 3 on a blue wave with a yellow gradient background. The text is written in an all capitals light blue font with a shadow effect. It is advertised on Cargo trucks.

Luigi GP
Luigi GP is a sponsor that appears in Mario Kart DS. The logo consists of the company name in a black font with a red shadow effect on a yellow background. The word "Luigi" is underlined in black, and a black checkered section appears at the end of the underlining and fades around the "GP". Three billboards displaying the logo appear before the finish line.

Waluigi Sport
Waluigi Sport is a sponsor that appears in Mario Kart DS and Mario Kart 7. Presumably, it is some kind of sports company with some relation to Waluigi. The logo consists of the company name in an all-capitals blue and green gradient font with a with outline on a red background. Six stars arranged in three rows of two appear on either side of the logo, with the two stars on the middle rows being white and the other four being yellow. It is advertised by means of trackside banners.

Yoshi Kart
Yoshi Kart is a sponsor that appears in Mario Kart DS and Mario Kart Wii. This sponsor appeared in two stages, Delfino Square and N64 Choco Mountain. The first variant from Delfino Square has the company name written in orange and a shadow effect. The center of the "O" in "Yoshi" is filled in with yellow. The background is dark blue with a white diagonal stripe on the left. The second variant only appears on one billboard of Choco Mountain; its design is more simplistic, with a white background, "Yoshi" in blue text and "Kart" in black text. Similarly, a diagonal line strikes through the "o" of "Yoshi", except it is red and thinner. This logo also appears in Mario Kart Wii, which features Delfino Square as a Retro Course. While the logo has the same layout, it was slightly refined, with a more curved font, a black outline and 3D effect and an orange and yellow gradient rather than a solid fill. It is still advertised by trackside banners.