Jack's friend in London who enjoys flouting societal norms and invents a sick friend, Mr. Bunbury, to escape social obligations. He is known for his provocative behavior and humorous contradictions.

A formidable and authoritative figure who is Algernon's aunt and Gwendolen's mother, determined to control her daughter's marriage prospects and keen to point out the faults she sees in others.

Lady Bracknell's daughter and the love interest of Jack, who she knows as Ernest. She is charmed by the name Ernest and idealizes it as part of her romantic aspirations.

Jack's ward in the countryside, who is intrigued by tales of Jack's fictitious brother Ernest and keeps a diary of her imaginations regarding him. She shares an idealistic view of romance.

Cecily's governess, tasked with her education but often confused by her own teachings, and interested in the attentions of Dr. Chasuble.

The local church canon who frequently delivers sermons and harbors a timid affection for Miss Prism, struggling with the propriety of courtship.

Algernon's butler who assists in the facade of his master's double life by maintaining a composed demeanor while backing up Algernon's stories.

Jack's butler in the country, responsible for attending to guests and creating diversions during visits.