Friedrich Karl Walter Degenhard Freiherr[a] von Loë (9 September 1828 – 6 July 1908) was a Prussian soldier and aristocrat.

Loë had the distinction of being one of the few Roman Catholics to reach the rank of Generalfeldmarschall (field marshal) in the Prussian and imperial German armies.

The House of Loë was an ancient Catholic noble family of Westphalian origin, who was raised to the status of baron of the Holy Roman Empire in 1629.

After spending two years in charge of the cavalry branch, he was promoted to field marshal on 1 January 1905, becoming one of the few Catholics to receive this highest rank after service in the Protestant-dominated Prussian army.

[2] In 1897, the field marshal retired from military service due to ill health, although he retained his positions as adjutant general and emissary.

[1][2] On 24 May 1859, Loë married his distant cousin Countess Franziska von Nimptsch, née Hatzfeldt zu Trachenberg (1833–1922), who had three children of her own from a previous marriage.

[4] Loë's faith, as well as his connection to the House of Hatzfeldt, would also bring him into conflict with Imperial Chancellor Otto von Bismarck, who spearheaded the anti-Catholic Kulturkampf during the 1870s.