Lososinka, River in Petrozavodsk, Russia

Lososinka is a 25-kilometre river in the Republic of Karelia, Russia, flowing from Lososinskoye Lake to Lake Onega. It passes through Prionezhsky District and the city of Petrozavodsk, and its main tributary is the Mashozerka. Its basin covers 302 square kilometres, with the source at 186 metres and the mouth at 35 metres above sea level.

People settled along the Lososinka for centuries, drawn by its fish and fresh water. As the city of Petrozavodsk grew nearby, the lower part of the river became part of the urban landscape.

The river's Russian name Lososinka and its Karelian equivalent Lohijogi both derive from the word for salmon, a name recorded since pre-Petrine times. In 1915 the Olonets branch of the Imperial Russian Water Rescue Society opened a paid public beach at the dam pond, charging 5 kopecks for adults and 3 for schoolchildren. In the 1930s a bathing house with separate men's and women's sections and a 3-metre diving board stood near the Sovetsky Bridge.

The river is easiest to visit from the bridges that connect both banks at several points, giving good views over the water. Summer is the most comfortable season to walk along the banks, as the ground stays dry and the light lasts well into the evening.

The Karelian name Lohijogi and the Finnish Lohijoki both mean 'salmon river', matching the Russian Lososinka. Before the 19th century the stretch from Lake Lososinoye to the Mashozerka confluence was called the Lososinskaya River, while only the lower course bore the name Lososinka.