| Big name in carpet cleaning | 27 |
| Big name in cartography | 23 |
| Big name in cash machines | 25 |
| Big name in cassette tapes | 26 |
| Big name in casual clothes | 26 |
| Big name in casual wear | 23 |
| Big name in catalogues | 22 |
| Big name in caulking products | 29 |
| Big name in CBS history | 23 |
| Big name in cell service | 24 |
| Big name in cellular service | 28 |
| Big name in cheesecake | 22 |
| Big name in Chicago politics | 28 |
| Big name in child education | 27 |
| Big name in child psychology | 28 |
| Big name in Chinese history | 27 |
| Big name in Christian rock | 26 |
| Big name in Chrysler history | 28 |
| Big name in circular saws | 25 |
| Big name in civil rights | 24 |
| Big name in classical guitars | 29 |
| Big name in cloud storage | 25 |
| Big name in coffee makers | 25 |
| Big name in coffeemakers | 24 |
| Big name in coffemakers | 23 |
| Big name in collectible cards | 29 |
| Big name in collectibles | 24 |
| Big name in college guides | 26 |
| Big name in comic books | 23 |
| Big name in computer chips | 26 |
| Big name in computer games | 26 |
| Big name in computer hardware | 29 |
| Big name in computer history | 28 |
| Big name in computer networks | 29 |
| Big name in computer printers | 29 |
| Big name in computer software | 29 |
| Big name in conditioners | 24 |
| Big name in confectioneries | 27 |
| Big name in construction | 24 |
| Big name in construction toys | 29 |
| Big name in construction? | 25 |
| Big name in contact lenses | 26 |
| Big name in convertible sofas | 29 |
| Big name in cooking oil | 23 |
| Big name in cooking oils | 24 |
| Big name in corn syrup | 22 |
| Big name in corporate scandal | 29 |
| Big name in cough drops | 23 |
| Big name in country music | 25 |
| Big name in coupon mailings | 27 |
| Big name in court shoes | 23 |
| Big name in coverage denial | 27 |
| Big name in cowboy hats | 23 |
| Big name in craft knives | 24 |
| Big name in credit cards | 24 |
| Big name in credit reports | 26 |
| Big name in crossword metas | 27 |
| Big name in crossword puzzles | 29 |
| Big name in Cuban history | 25 |
| Big name in custom CD oldies | 28 |
| Big name in cycling helmets | 27 |
| Big name in Dakota history | 26 |
| Big name in dangerous stunts | 28 |
| Big name in Danish porcelain | 28 |
| Big name in daredevilry | 23 |
| Big name in daredeviltry | 24 |
| Big name in data storage | 24 |
| Big name in daytime TV | 22 |
| Big name in defense contracts | 29 |
| Big name in deliveries | 22 |
| Big name in denim apparel | 25 |
| Big name in dental care | 23 |
| Big name in dental hygiene | 26 |
| Big name in dental products | 27 |
| Big name in department stores | 29 |
| Big name in designer bags | 25 |
| Big name in desktop computers | 29 |
| Big name in desktop PCs | 23 |
| Big name in dictionaries | 24 |
| Big name in digital cameras | 27 |
| Big name in digital software | 28 |
| Big name in digital watches | 27 |
| Big name in dining guides | 25 |
| Big name in dinnerware | 22 |
| Big name in direct sales | 24 |
| Big name in direct selling | 26 |
| Big name in discount retail | 27 |
| Big name in disinfectants | 25 |
| Big name in drum heads | 22 |
| Big name in e-commerce | 22 |
| Big name in early computers | 27 |
| Big name in electric guitars | 28 |
| Big name in electricity | 23 |
| Big name in electronics | 23 |
| Big name in energy bars | 23 |
| Big name in engagement rings | 28 |
| Big name in essay writing | 25 |
| Big name in Ethiopian history | 29 |
| Big name in executive jets | 26 |
| Big name in eye health | 22 |