Mogami (最上) was the second ship in the Yodo class of high-speed protected cruisers in the Imperial Japanese Navy.

Officially rated as a tsūhōkan, meaning dispatch boat or aviso, she was named after the Mogami River in northern Honshū, Japan.

[1] However, as the Japanese could not yet produce reduction gears, Mogami utilized an unwieldy system of three direct-drive marine turbine engines, two for cruising and one for high speed.

While being dismantled at Osaka, a spark from a welding torch ignited the remaining oil in Mogami's bunkers, causing an explosion and fire which destroyed the hulk of the vessel in two hours.

The mainmast of Mogami was preserved at the Nakanoshima Park in downtown Osaka as a memorial until 9 February 2009 when it was removed to the Kure Maritime Museum.