Emma Woodhouse, the protagonist of the story, is a beautiful, high-spirited, intelligent, and 'slightly' spoiled young woman of the age of twenty. Her mother died when she was very young, and she has been mistress of the house ever since, certainly since her older sister got married. While she is in many ways mature for her age, Emma makes some serious mistakes, mainly due to her conviction that she is always right and her lack of real world experience. Although she has vowed she will never ever marry, she delights in making matches for others. She seems unable to fall in love, until jealousy makes her realize that she has loved Mr Knightley all along.
George Knightley, about thirty-six years old. He is a close friend of Emma, and her only critic, though he cares deeply for her. Mr Knightley is the owner of the neighbouring estate of Donwell Abbey, which includes extensive grounds and a farm. He is the elder brother of Mr John Knightley—the husband of Emma's elder sister Isabella. Mr Knightley is very annoyed with Emma for persuading Harriet to turn down Mr Martin, thinking that the advantage is all on Harriet's side; he also warns Emma against matchmaking Harriet with Mr Elton, correctly guessing that Mr Elton has a much higher opinion of himself. He is suspicious of Frank Churchill and his motives; although his suspicion turns out to be based mainly on jealousy of the younger man, his instincts are proven correct by the revelation that Frank Churchill is not all that he seems.
Mr Frank Churchill, Mr Weston's son by his previous marriage, an amiable young man who manages to be liked by everyone except Mr Knightley, who considers him quite immature, although this partially results from his jealously of Frank's supposed 'pursuit' of Emma. After his mother's death he was raised by his wealthy aunt and uncle, whose last name he took. Frank enjoys dancing and music and living life to the fullest. Frank may be viewed as a careless but less villainous version of characters from other Austen novels, such as Mr Wickham from Pride and Prejudice or Willoughby from Sense and Sensibility.
Jane Fairfax, an orphan whose only family consists of an aunt, Miss Bates, and a grandmother, Mrs Bates. She is regarded as a very beautiful, clever, and elegant woman, with the best of manners, and is also very well-educated and exceptionally talented at singing and playing the piano; in fact, she is the sole person that Emma envies. She has little fortune, however, and seems destined to become a governess – a prospect she dislikes.
Harriet Smith, a young friend of Emma's, is a very pretty but unsophisticated girl who is too easily led by others, especially Emma; she has been educated at a nearby school. The illegitimate daughter of initially unknown parents, she is revealed in the last chapter to be the daughter of a fairly rich and decent tradesman, although not a "gentleman". Emma takes Harriet under her wing early in the novel, and she becomes the subject of some of Emma's misguided matchmaking attempts. Harriet initially rebuffs a marriage proposal from farmer Robert Martin because of Emma's belief that he is beneath her, despite Harriet's own doubtful origins. She then develops a passion for Mr Knightley, which is the catalyst for Emma realising her own feelings. Ultimately, Harriet and Mr Martin are wed, despite Emma's meddling.
Philip Elton is a good-looking, well mannered and ambitious young vicar. Emma wants him to marry Harriet; he wants to marry Emma. Mr Elton displays his mercenary nature by quickly marrying another woman of means after Emma's rejection.
Augusta Elton, formerly Miss Hawkins, is Mr Elton's moneyed but obnoxious wife. She is a boasting, domineering, pretentious woman who likes to be the centre of attention and is generally disliked by Emma and her circle. She patronizes Jane, which earns Jane the sympathy of others.
Mrs Anne Weston, formerly Miss Taylor, was Emma's governess for sixteen years and remains her closest friend and confidante after she marries Mr Weston in the opening chapter. She is a sensible woman who adores Emma. Mrs Weston acts as a surrogate mother to her former charge and, occasionally, as a voice of moderation and reason.
Mr Weston, a recently wealthy man living in the vicinity of Hartfield. He marries Emma's former governess, Miss Taylor, and by his first marriage is father to Frank Churchill, who was adopted and raised by his late wife's brother and sister-in-law. Mr Weston is a sanguine, optimistic man, who enjoys socializing.
Miss Bates, a friendly, garrulous spinster whose mother, Mrs Bates, is a friend of Mr Woodhouse. Her accomplished niece, Jane Fairfax, is the light of her life. One day, Emma humiliates her on a day out in the country, when she pointedly alludes to her tiresome prolixity. Afterward, Mr Knightley sternly rebukes Emma. Shamed, she tries to make amends.
Henry Woodhouse, Emma's father, is always concerned for his own health and comfort, and to the extent that it does not interfere with his own, the health and comfort of his friends. He assumes a great many things are hazardous to one's health, and is generally a difficult person to handle because he is always fussing about the trifling things which bother him and which he assumes must bother everyone else just the same, to the point of trying to convince his visitors to deny foods he thinks too rich. He laments that "poor Isabella" and especially "poor Miss Taylor" have married and been taken away from him, because since he is unhappy about their being gone, he assumes they must be miserable as well.
Isabella Knightley (née Woodhouse) is the elder sister of Emma and daughter of Henry. She is married to John Knightley, and spends much of her time at home caring for her five children (Henry, 'little' John, Bella, 'little' Emma, and George).
John Knightley is Isabella's husband and George's younger brother. He is an old acquaintance of Jane Fairfax. He indulges his family's desires for visits and vacations, though he would prefer to stay at home, especially if the weather is less than perfect.