Henry Sidgwick
- Includes links to book texts, articles, letters, encyclopedia entries, reviews, and informational sites relating to the philosopher.
- http://utilitarian.net/sidgwick/

Philosopher of the Month: Henry Sidgwick
- A short article critiquing existing scholarship on Sidgwick and his legacy. By Bart Schultz.
- http://www.philosophers.co.uk/cafe/phil_jul2001.htm

Utilitarianism: Henry Sidgwick
- A short extract from The Penguin Dictionary of Philosophy.
- http://www.utilitarianism.net/sidgwick.htm

Sidgwick on Kant
- An article which discusses Sidgwick's debt to Kant.
- http://www.bun.kyoto-u.ac.jp/~suchii/sidg.on.kant.html

Sidgwick's Three Principles and Hare's Universalizability
- A paper which demonstrates similarities between Sidgwick and Hare in the field of moral judgements.
- http://www.bun.kyoto-u.ac.jp/~suchii/sidg&hare_index.html

Biographical Notes on Sidgwick
- A chronology of Sidgwick's life by M.Okuno.
- http://www.bun.kyoto-u.ac.jp/~suchii/sidg.bio.html