Protestant Christianity: Biographies
- Adin Ballou
- Adoniram Judson
- Agnes Maude Royden
- Aimee Semple McPherson
- Albert Schweitzer
- Alexander Campbell
- Alexander Duff
- Alexander Henderson
- Alexander Kilham
- Andreas Osiander
- Andrew Melville
- Ann Lee
- Anne Hutchinson
- Anthony Collins
- Antoinette Louisa (Brown) Blackwell
- Arthur Michael Ramsey Baron Ramsey of Canterbury
- Benjamin Hoadly
- Billy Graham
- Billy Sunday
- Booth