| A | B |
| Jean Louise (Scout) Finch | narrator of the book |
| Jeremy (Jem) Finch | Scout's brother |
| Atticus Finch | attorney |
| Arthur (Boo) Radley | mysterious neighbor |
| Calpurnia | maid and cook for the Finch family |
| Tom Robinson | accused of rape |
| Helen | Tom's wife |
| Mayella Ewell | teenager who accused someone of raping her |
| Bob Ewell | irresponsible, alcoholic father |
| Mr. Gilmer | prosecuting attorney at the trial |
| Dill (Charles Baker Harris) | friend of Scout and Jem |
| Walter Cunningham | upright farmer who refuses to accept charity |
| Mrs. Dubose | Jem must read to this elderly neighbor |
| Aunt Alexandra | Atticus's sister |
| Uncle Jack | Atticus's brother |
| Maudie Atkinson | neighbor whose home burns down |
| Heck Tate | sheriff of Maycomb County |
| Reverend Sykes | African-American minister |
| Judge Taylor | presiding judge at the trial |
| Adolphus Raymond | white man who married a black woman |
| Mr. Underwood | publisher of Maycomb's newspaper |
| Nathan Radley | Boo Radley's brother |