AS S1 and AS S2 were two twin models of passenger cars manufactured by Towarzystwo Budowy Samochodów AS in Warsaw, Poland from 1927 to 1930.

The two models differed with their engines and existed in 4 versions of car body style: taxi landaulet, convertible, limousine and panel van.

[1] The car was designed and assembled by Towarzystwo Budowy Samochodów AS in Warsaw, Poland, in the Warszawskie Autowarsztaty factory at 64 Złota Street.

On 27 March 1927, the final version was manufactured in Fabryka Powozów Braci Węgrzeckich located in Szydłowiec, Poland.

It was manufactured in 4 car body styles: taxi landaulet, convertible, limousine and panel van.