The Reda is a river in northern Poland in the Pomeranian Voivodship.

It empties into the Bay of Puck, a part of Gdańsk Bay.

The Reda is 45 km long, and drains about 485 square kilometers.

It flows within the geographical region of Pobrzeże Kaszubskie; bordering Puszcza Darżlubska (English: Darżlubie Forest, or Darżlubska Wilderness) to the north, and the Tricity Landscape Park (Trójmiejski Park Krajobrazowy) to the south.

The Reda flows through or near these locations: