HMS Blanche was the second of two Blonde-class scout cruisers built for the Royal Navy in the first decade of the 20th century.

The ship was launched on 25 November 1909 by Lady Mai Philipps, wife of Sir Owen Philips, Member of Parliament for Pembroke and Haverfordwest.

[6] During the night of 2 October, the ship struck a rock on the Pentland Skerries and suffered damage to her bow and stern.

[7] Captain Wilfred Henderson assumed command of the ship and the Fourth Destroyer Flotilla of the First Fleet on 1 May 1912.

[8] Blanche had been transferred to the Third Battle Squadron as of 18 June 1913[9] and Captain Richard Hyde assumed command on 5 July.

[10] She was still assigned to the 3rd Battle Squadron of the Grand Fleet in Scapa Flow at the start of World War I.

[12] Blanche was transferred to the Fourth Battle Squadron, joining her sister ship, Blonde, in January 1916.

[20] The sisters were listed for sale by 18 March 1920[21] and Blanche was sold to Fryer for scrap on 27 July 1921 and broken up at Sunderland.