| Big name in photography | 23 |
| Big name in phonographs | 23 |
| Big name in phones | 18 |
| Big name in philanthropy | 24 |
| Big name in pharmaceuticals | 27 |
| Big name in petroleum, once | 27 |
| Big name in petroleum | 21 |
| Big name in petrol | 18 |
| Big name in pet products | 24 |
| Big name in pet foods | 21 |
| Big name in pet food | 20 |
| Big name in pet chow | 20 |
| Big name in pest control | 24 |
| Big name in personal planners | 29 |
| Big name in personal banking | 28 |
| Big name in perfumes | 20 |
| Big name in perfumery | 21 |
| Big name in perfect 10s | 23 |
| Big name in pens | 16 |
| Big name in peanut butter cups | 30 |
| Big name in peanut butter | 25 |
| Big name in PCs | 15 |
| Big name in PC chips | 20 |
| Big name in payroll | 19 |
| Big name in pasta sauce | 23 |
| Big name in pasta products | 26 |
| Big name in pasta | 17 |
| Big name in parks | 17 |
| Big name in paperbacks | 22 |
| Big name in paperback publishing | 32 |
| Big name in paper products | 26 |
| Big name in paper | 17 |
| Big name in pantyhose | 21 |
| Big name in paint | 17 |
| Big name in pain relief | 23 |
| Big name in pads | 16 |
| Big name in packaged soups | 26 |
| Big name in outdoor grills | 26 |
| Big name in outdoor gear | 24 |
| Big name in outdoor equipment, for short | 40 |
| Big name in outdoor equipment | 29 |
| Big name in outdoor cooking | 27 |
| Big name in outdoor art | 23 |
| Big name in outboard motors | 27 |
| Big name in oratorios | 21 |
| Big name in orange juice | 24 |
| Big name in online restaurant reviews | 37 |
| Big name in online quizzes | 26 |
| Big name in online poker | 24 |
| Big name in online merchandising | 32 |
| Big name in online financial services | 37 |
| Big name in online correspondence | 33 |
| Big name in online celebrity gossip | 35 |
| Big name in online auctions | 27 |
| Big name in Olympics skiing | 27 |
| Big name in old typewriters | 27 |
| Big name in old strings | 23 |
| Big name in old scary movies | 28 |
| Big name in old rock 'n' roll radio | 43 |
| Big name in old radio | 21 |
| Big name in old Egypt | 21 |
| Big name in old burlesque | 25 |
| Big name in oil filters | 23 |
| Big name in oil ... and oils | 28 |
| Big name in oil | 15 |
| Big name in office supplies | 27 |
| Big name in office equipment | 28 |
| Big name in off-price clothing | 30 |
| Big name in obstetrics | 22 |
| Big name in nutrition | 21 |
| Big name in nutrient applicators | 32 |
| Big name in nursery rhymes | 26 |
| Big name in nuclear physics | 27 |
| Big name in notebooks | 21 |
| Big name in not really roughing it | 34 |
| Big name in Norwegian royalty | 29 |
| Big name in Norway | 18 |
| Big name in Norse mythology | 27 |
| Big name in nonstick cookware | 29 |
| Big name in noise-canceling headphones | 38 |
| Big name in newspaper publishing | 32 |
| Big name in news gathering | 26 |
| Big name in news beginning 1925 | 31 |
| Big name in news aggregation | 28 |
| Big name in news | 16 |
| Big name in New Haven | 21 |
| Big name in New Age music | 25 |
| Big name in New Age | 19 |
| Big name in networking | 22 |
| Big name in natural vegetable chips | 35 |
| Big name in nail care | 21 |
| Big name in mustard | 19 |
| Big name in musicals | 20 |
| Big name in music compilations | 30 |
| Big name in museums | 19 |
| Big name in multivitamins | 25 |
| Big name in multilevel marketing | 32 |
| Big name in muffler replacement | 31 |
| Big name in mowers | 18 |
| Big name in moving | 18 |