The River Ogden is a minor river in Lancashire, England. It is approximately 4.4 miles (7.1 km) long and has a catchment area of 9.77 square miles (25.298 km²).^[a][1]

Beginning on the moors of Haslingden Grane as Ogden Brook, it heads east, feeding Ogden and Calf Hey Reservoirs.^[2] It then passes through the Holden Wood Reservoir and collects Swinnel Brook in an area historically known as the Trippet of Ogden, becoming the River Ogden. Turning to the south, it passes through the Helmshore part of Haslingden where it is met by Musbury Brook and then Alden Brook, overlooked by Musbury Tor. Heading southeast it joins the River Irwell at Irwell Vale, between Rawtenstall and Ramsbottom near grid reference SD792202.^[3]