Sigelwara Land is the title of an essay in two parts by J. R. R. Tolkien, appeared in Medium Aevum Vol. 1, No. 3. December 1932 and Medium Aevum Vol. 3, No. 2. June 1934. Treats the etymology of the Old English word for Ethiopians, Sigelhearwan. Tolkien concluded that while the meaning of the first element was evidently sigel "Sun", but that the meaning of the second element hearwan was not recoverable:

"a symbol ... of that large part of ancient English language and lore which has now vanished beyond recall, swa hit no wære."

The phrase Sigelwara land appears in a free translation of the book Exodus (Codex Junius 11):

.. be suðan Sigelwara land, forbærned burhhleoðu, brune leode, hatum heofoncolum.

"... southward lay the Ethiop's land, parched hill-slopes and a race burned brown by the heat of the sun ..."

The mysterious hearwan, adapted to modern English phonology, may be the inspiration of some placenames in Tolkien's The Lord of the Rings, viz. Dunharrow, and, less prominently, Underharrow, a placename in Rohan. However, harrow is less mysterious and meant "place for sacrifice", see its cognate Horgr.