Ludwig Derangadage Scotty (born 20 June 1948) is a Nauruan politician who twice served as President of Nauru and was Speaker of Parliament five times between 2000 and 2016.

Scotty grew up in Anabar in the north of Nauru; he attended secondary school from 1960 until 1964 and studied law at the University of the South Pacific in the Fijian capital city Suva.

Ludwig Scotty returned as president on 22 June 2004 after a member of Harris's faction of the Parliament of Nauru defected.

In this term, Scotty became the first president of Nauru to give up the foreign affairs ministry, as David Adeang was appointed to that position.

The liberal use of Parliamentary no-confidence motions, the occasion of many crises of government over several years, seemed initially to have subsided under Ludwig Scotty's widely respected tenure of office.

Coming as it did only a few months after the landslide victory of his supporters at the polls in August 2007, his relinquishing of office so soon afterwards can be seen in terms of an element of promise and expectations unfilled.

It remained to be seen whether Scotty, who turned 60 in 2008, and whose Administration was replaced by a ministerial team several of whom were many years his junior, would in the future seek a further term of office as president.

He explained that his decision was also due to the allegations over Opposition members receiving financial support from Australian company Getax.