Best organic cotton T-shirt brands
Updated November 7, 2026
A good cotton tee holds its shape, softens over time and does not twist after a few washes.
Look for 100% cotton jersey, organic or GOTS certification, and a weight that suits you: about 150 GSM for light, 180 to 220 for everyday, 250 and up for heavyweight.
The 20 brands below sell cotton T-shirts and are listed in The Plain Thread directory. The green links go straight to their matching shop pages. Some of these brands also sell blends, so check the fiber content on each product.
Alpaca and vicuña knitwear for men and women across a range of price points.
Merino wool base layers and cotton outdoor clothing built for hiking, climbing, and running.
UK-made 100% organic cotton basics and activewear for men and women.
Australian Fair Trade certified organic cotton basics and footwear.
Fair Trade certified basics in organic Peruvian Pima cotton for men and women.
Compostable organic Supima cotton underwear and basics with minimal packaging.
Indian 100% organic cotton basics and casual clothing for men and women.
Sydney-made custom-fit organic cotton, hemp, and merino clothing for men and women.
Mongolian cashmere knitwear brand working directly with herder cooperatives.
Swedish-designed organic cotton underwear, t-shirts, and loungewear basics built for everyday comfort.
GOTS-certified organic cotton menswear basics, including t-shirts, trousers, and jackets designed in Denmark.
Colorful organic cotton socks and T-shirts designed in Switzerland and produced in Europe.
GOTS-certified organic cotton streetwear basics including tees, sweatshirts, trousers, and accessories, made in Europe.
Organic cotton boxers, socks, loungewear, and basics for men, made from GOTS-certified and recycled materials.
German casual and denim brand in organic cotton, linen, and wool for men, women, and kids.
High-end Danish basics in organic cotton, wool, wild silk, linen, and hemp — full natural fiber range.
Danish women's GOTS organic cotton basics.
Australian premium organic cotton basics for men and women.
B Corp women's clothing brand using natural and organic fibers, one of the UK's highest B Corp scorers.
Colorful, size-inclusive unisex organic cotton basics and casualwear, LA-made.
Common questions
Why do some T-shirts twist after washing?
The side seams twist when the knit fabric is cut off grain. Better-made tees are cut to prevent it.
What is combed cotton?
Cotton brushed to remove short fibers before spinning, which makes a softer, stronger yarn.
How do I stop a cotton tee from shrinking?
Wash cold and line dry, or buy tees sold as pre-shrunk or garment dyed.