Rothesay tartan is a tartan that is associated with the island of Bute, which is located in the Firth of Clyde in Scotland. The tartan is composed of a mix of green, blue, yellow, and red stripes, and it is often used for clothing and other textiles such as kilts and scarves.

The Rothesay tartan is said to have been designed by a local weaver in the early 20th century, and it was officially registered with the Scottish Tartans Authority in 2005. The colors used in the tartan are said to represent the island's natural beauty, with the green stripes symbolizing the island's lush vegetation, the blue stripes representing the sea and the sky, the yellow stripes symbolizing the island's sandy beaches, and the red stripes representing the island's red sandstone cliffs.

It is not one of the most common tartan, but still worn by many people from the island or with connections to it, and also used in souvenirs to represent the island and its heritage.

If you are interested in purchasing an item made from Rothesay tartan, you can find it online or in Scottish gift shops.