| Term | Definition |
| Atticus Finch | Father to Scout and Jem; lawyer who defends Tom Robinson |
| Jean Louise Finch | Scout; daughter of Atticus, sister of Jem |
| Jeremy Atticus Finch | Jem; son of Atticus, brother to Scout |
| Calpurnia | The Finch's housekeeper; acts as a more distant mother-figure to Jem and Scout |
| Charles Baker Harris | Dill; visits next door during the summer |
| Miss Maudie | Finch's neighbor, children's best friend among the adults of Maycomb. |
| Miss Caroline | Young teacher, disaproves of Scout's reading ability |
| Boo Radley | Rarely leaves the house, leaves Jem and Scout trinkets |
| Nathan Radley | The stern distant brother of Boo who seldom speaks even though he is seen every day |
| Walter Cunningham | Scout's school mate who cannot afford lunch |
| Aunt Alexandra | Atticus's sister, a strong-willed woman with a fierce devotion to her family. She is the perfect Southern lady, and her commitment to propriety and tradition often leads her to clash with Scout. |
| Miss Stephanie | The neighborhood gossip |
| Uncle Jack | Atticus and Alexandra's brother; visits at Christmas; is a doctor |
| Burris Ewell | Filthy, cusses out the teacher, only goes to the first day of school every year |
| Great Depression | the economic crisis beginning with the stock market crash in 1929 and continuing through the 1930s |
| Maycomb, Alabama | Name of the town in TKAM. |
| Harper Lee | Author of To Kill A Mockingbird |
| Themes | A time for courage, education, prejudices, racial discrimination, loss of innocence, coming of age, etc. |
| First Person | Point of View in To Kill a Mockingbird |
| Mrs. Dubose | An old lady who lives down the street and who screams at the children as they pass her house. |
| Tom Robinson | An African-American man defended by Atticus |
| Cecil Jacobs | Scout's classmate who insults Atticus |
| Prejudice | Maycomb's usual disease |
| Heck Tate | Sheriff of Maycomb |
| Tim Johnson | Mad dog |