- LiteratureClassics.com: William B. Yeats - Essays on Yeats' works, as well as a biography and a selection of quotes.
- The System of Yeats's "A Vision" - An attempt to offer a clear and helpful guide to the ideas of A Vision. Explores this esoteric system created by George and W. B. Yeats around the spiral gyre and the phases of the moon.
- The Two Trees: Parallel between Yeats's Verse and McKennitt's Lyrics - A comparison of Yeats's poem with the song version by Lorena McKennitt.
- Wikipedia: William Butler Yeats - Article discussing the poet's life, works and influence, with a bibliography.
- William Butler Yeats - USB Manuscript Collections: William Butler Yeats Microfilmed Manuscripts Collection
- William Butler Yeats - Biography and selected poems.
- William Butler Yeats - A biography of the Irish poet and dramatist, focusing on his writings for the theatre.
- William Butler Yeats - To an Isle in The Water - The Poetry of William Butler Yeats set to music and sung by Patti Cohenour.
- Yeats Museum - Information on a small museum which is a permanent tribute to the artistic achievements of the Yeats family, including John Butler Yeats and Jack B. Yeats.
- Yeats Society of New York - Calendar of Yeats Society events and activities in NYC, and links to Yeats resources on the net
- Yeats Society Sligo - Site devoted to the perpetuation of the artistic heritage of the Yeats family and to the celebration of the life and achievements of William Butler Yeats and his poetry.