Vyborgskaya cotton-spinning manufactory, Industrial heritage site in Vyborgsky District, Russia.

The Vyborgskaya cotton-spinning manufactory, known as Krasny Mayak, occupies houses 55–59 on the Vyborgskaya Embankment and the weaving block at Kantemirovskaya Street 3. The main building was designed by Vasily Kosyakov in 1899 and rebuilt by M. Yu. Kats-Kapelinsky in 1907. The site also includes a spinning block with a forge and chimney at Alexandra Matrosova Street 4, and a 1913–1914 residential building at Vyborgskaya Embankment 59.

The manufactory was established in the second half of the 19th century and experienced major development under successive ownership as architects and engineers added new structures regularly. It played an important role in the region's textile industry until its closure at the end of the 20th century.

The complex reflects late 19th-century industrial design approaches with buildings from different construction phases visible across the site. This architectural variety shows how building practices evolved as the factory expanded and adapted over time.

The complex sits along several streets and is reachable by public transportation that crosses through Saint Petersburg. It is best to visit during daytime hours to clearly see the building architecture and layout of the site.

The name "Krasny Mayak" (Red Lighthouse) was adopted in 1923, four years after nationalization. The site had earlier been a rope factory run by merchant Gavrila Flug from 1772 to 1830; the lane beside it, now Kantemirovskaya Street, was called Flyugov Pereulok after him. A wooden "Red People" sculpture by Andrey Lyublinsky stands opposite the Kantemirovsky Bridge ramp.