Red is the color at the end of the spectrum of visible light next to orange and opposite violet. Red color has a predominant light wavelength of roughly 620–740 nanometres. Red is one of the additive primary colors of visible light, along with green and blue, which in Red Green Blue (RGB) color systems are combined to create all the colors on a computer monitor or television screen. Red is also one of the subtractive primary colors, along with yellow and blue, of the RYB color space and traditional color wheel used by painters and artists.

Product Red, styled as (PRODUCT)^RED, is a licensed brand that seeks to engage the private sector in raising awareness and funds to help eliminate HIV/AIDS in Africa. It is licensed to partner companies including Nike, American Express (UK), Apple Inc., The Coca-Cola Company, Starbucks, Converse, Electronic Arts, Head, Bugaboo, Penguin Classics (UK & International), Gap, Armani, Hallmark (US), SAP and Beats Electronics (Beats by Dr. Dre). The concept was founded in 2006 by U2 frontman and activist, Bono, together with Bobby Shriver of the ONE/DATA. The Global Fund to Fight AIDS, Tuberculosis and Malaria is a recipient of (RED) money.

RED! was a Dutch pop group formed in the television program Popstars in its debut 2008 edition. The members were the three winning finalists of the program, namely Brandi Russell, Steffie Zoontjes and Deon Leon. They had come first, second and third respectively and were all declared winners.

Red is a color.

Red! (Dutch: Rood! or ROOD!) is a Flemish socialist political party in Belgium. It was founded in 2011 after some members of SP.A, led by Erik De Bruyn, left the Flemish social-democratic party. Red! Supports a social democratic welfare state, and opposes Neoliberalism and the Third Way policies endorsed by the SP.A. The party currently has no parliamentary representatives.