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PT East West Seed Indonesia (EWINDO) is a joint venture between Enza Zaden and East West Seed. The Indonesian name is "Cap Panah Merah"

Q-Potato is a Dutch potato company focused on the (international) trade in seed and ware potatoes.

Quaak Potato BV is a family-run farm in Zeeland, Netherlands, growing and processing potatoes, sugar beets, beans, wheat, onions, and alfalfa since 1930. They use modern packaging for local and international markets.

R S Cockerill Ltd is one of the UK's leading leading suppliers and packers of potatoes.

Rockyview Elite Tuber Ltd. has a warehouse located in Alberta where the company stores seed potatoes.

Rockyview Elite Tubers is a family-run seed potato farm located about 30 kilometers northeast of Calgary, specializing in premium E1 and E2 seed potatoes. The farm combines onsite laboratory and greenhouse facilities with a closed-system approach to ensure high-quality production, storage, and preparation of seed potatoes.

Romagnoli F.lli SpA is one of Italy's foremost processors and marketers of fruits and vegetables, especially potatoes. Based in Bologna, its 65 employees work in modern systems and structures.

Row 7 is an organic food company built to reimagine food from seed to table. Working in collaboration with chefs, farmers and plant breeders.

Royal Zap has more than a century of experience in the selection of seed and grains, the fertile clay soil in their polders in the northern part of North Holland

The Rush Group is a global fresh produce trading company focused on potatoes, sweet potatoes, butternut squash, carrots, onions, cauliflowers, broccoli, apples and sweet corn

Ryan Creek Farm, established in 1906, is a family-run farm located in Pemberton, British Columbia. They specialize in growing certified seed potatoes.

Romion Agri & Co SRL is a Romanian firm with its headquarters in ZABALA. It works in the potato farming industry and, in collaboration with Agrico, offers seed potatoes. The company underwent incorporation on February 5, 2008.

Saatzucht Niehoff have been successfully breeding, propagating and marketing seed potatoes in the former VEG breeding station in Bütow.

Salazar Farms produces Colorado Certified Seed Potatoes at the Colorado Field Generation 1 through 4 levels. The farm produces seeds both for other seed growers and for commercial Salazar Potatoespotato growers

Sam Dennigan and Company is a potato packing company in Ireland. The company was established in 1976 when its founder, Samuel Laurence Dennigan, began trading in ware and seed potatoes from Oldtown in north County Dublin.

Samriddhi by Mahindra is part of the Mahindra & Mahindra Limited and among many products this company offers seed potatoes.

San Acacio Seed, LLC is located in the southeastern region of the San Luis Valley thus allowing for complete geographical isolation from the potato growing regions of the valley.

The Sangha Group has been the largest producer of seed and table potatoes in Asia since 40 years. The group owns cutting-edge cold chain facilities as well as an innovative company dedicated to meeting current and future difficulties in agriculture and the food sector. The group is the largest client of John Deere tractors in India, with over 200 tractors and cutting-edge GRIMME equipment for seed bed preparation, planting, and potato harvesting.