Fra' Ludwig Hoffmann von Rumerstein (German: [ˈluːdvɪɡ ˈhɔfman fɔn ˈruːmɐʃtaɪn]; born Ludwig Franz Xaver Irenäus Joseph Peter Raimund Maria Hoffmann von Rumerstein;[1] 21 January 1937 – 13 December 2022) was a Grand Commander of the Sovereign Military Order of Malta.

[2] Hoffmann-Rumerstein’s work with the Sovereign Military Order of Malta began as a volunteer.

In 1968, he co-founded the Order’s Austrian volunteer corps in North Tyrol.

[3] From the end of January until the end of April 2017, Hoffmann-Rumerstein was the acting head of the Order, as Lieutenant ad interim, after the resignation of Fra' Matthew Festing as Prince and Grand Master.

[4][5] He retained this office until 29 April 2017, when the Complete Council of State elected Fra' Giacomo dalla Torre del Tempio di Sanguinetto as Lieutenant of the Grand Master for a period of one year.