Events that occurred on 12 February.
On Earth
- 1921 - Film producer and businessman Saul Zaentz is born.
- 1934 - Voice actress Annette Crosbie is born.
- 1937 - J.R.R. Tolkien writes Letter 11a.
- 1960 - J.R.R. Tolkien writes letter 222b.
- 1961 - Joseph Pearce is born.
- 1971 - Voice actor Scott Menville is born.
- 2010 - A Tolkien English Glossary is published.
In Arda
- T.A. 3019:
- The Fellowship of the Ring rests in Lothlórien.