Autoglym is a British manufacturer of a range of car care and valeting products, which are sold in over 45 countries.

Established in 1965, and based in Letchworth, Hertfordshire, Autoglym is part of the Altro Group.

The company's products are used by enthusiasts and professionals, and include customers such as vehicle manufacturers, distributors, bodyshops, professional valeting companies and transport operators. The product range consists of high quality exterior (chassis, bodywork, wheels), interior and glass care products. It also includes Autoglym LifeShine, a dealer-applied system of treatments that provides long-lasting protection for the paintwork, glass and upholstery of a car.

Autoglym currently holds two Royal Warrants in the UK as Supplier of car care products.

The Autoglym brand was founded in 1965 by a UK Motor Trade entrepreneur who developed a unique system for renovating used car paintwork. There were 11 products in the original range, including polishes, a sealant, a paint renovator and glass, interior, engine and wheel cleaners. The products were only available to professional valeters working in garages and workshops. The company had its manufacturing base in Digswell, trading as Welwyn Plastics. Welwyn Plastics used to produce other liquid products for various other industries, before deciding to concentrate solely on the production of Autoglym products, due to the strong growth of the brand. The sales and administration centre was in Welwyn Garden City trading as Autoglym. The first Autoglym training and product testing facility was established at the Welwyn site, something that has always been a key element in the Autoglym product development and improvement process. Autoglym was purchased by the Altro Group in the mid-1970s.