Quequén Lighthouse, Maritime lighthouse in Quequén, Argentina.

Quequén Lighthouse is a 34-metre conical concrete tower with a double gallery and a black lantern dome, painted black with a central white band. It stands about 1.5 km north of the mouth of the Quequén Grande River, at the port of Necochea. Its fixed light, at a focal height of 63 m, shows two white, red and green flashes by sector every 15 seconds.

The lighthouse was built in 1921 and has continuously guided ships along this coastal region ever since. Its construction marked an important step forward for maritime safety and the development of Quequén port.

The lighthouse is run by the Servicio de Hidrografía Naval of the Argentine navy, and a keeper's crew is still stationed there. Its light shows white, red and green sectors, so the colour a sailor sees depends on the bearing. The tower stands about 1.5 km north of the mouth of the Río Quequén Grande, at the port of Necochea.

The tower stands about 1.5 km north of the mouth of the Río Quequén Grande, in Quequén, the port of Necochea, roughly 7 km from Necochea's beach resort. It is managed by the Servicio de Hidrografía Naval and still has a keeper on site, so the grounds are a working facility rather than an open monument.

The structure rises prominently above the flat landscape and can be spotted from far away. This feature made it an indispensable navigation aid not only for seafarers but also for fishermen working this coastal area.