| 100% | CIA | 3 | Org. in Robert Ludlum novels |
| 71% | THEJANSON | 9 | & 2D Robert Ludlum novel published posthumously in 2002 |
| 56% | CIA | 3 | Org. in Clancy novels |
| 54% | SMERSH | 6 | Enemy org. in Bond novels |
| 53% | SPENSER | 7 | Detective in Robert B. Parker novels |
| 53% | CIA | 3 | Org. in many Tom Clancy novels |
| 52% | KGB | 3 | Org. in a le Carré novel |
| 52% | KGB | 3 | Org. in some Cold War spy novels |
| 52% | KGB | 3 | Org. in some John le Carré novels |
| 51% | OSS | 3 | Org. in old spy novels |
| 51% | CIA | 3 | Org. in Tom Clancy novels |
| 51% | CIA | 3 | Org. in many spy novels |
| 50% | CARLOSTHEJACKAL | 15 | Real-life villain who was an antagonist in Robert Ludlum's "The Bourne Identity" |
| 50% | KGB | 3 | Spy org. in a Tom Clancy novel |
| 49% | KGB | 3 | Org. in Beatriz Williams's novel "Our Woman in Moscow" |
| 49% | CIA | 3 | Spy org. in the Jason Bourne novels (Abbr.) |
| 49% | CIA | 3 | Spy org. in many 15-Across novels (Abbr.) |
| 49% | CIA | 3 | Espionage org. in some James Bond novels (Abbr.) |
| 49% | LOVELACE | 8 | Robert —, villain in 1748 Samuel Richardson novel Clarissa |
| 48% | JASON | 5 | Bourne in Ludlum novels |
| 47% | CIA | 3 | Org. in Viet Thanh Nguyen's Pulitzer-winning novel "The Sympathizer" (abbr.) |
| 46% | KGB | 3 | Cold War spy org. in many John le Carré novels (Abbr.) |
| 46% | BOURNE | 6 | Action hero Jason in three Ludlum novels |
| 46% | THEHOLCROFT | 11 | 1978 novel by Robert Ludlum |
| 44% | LIVESEY | 7 | Dr David —, magistrate in 1883 Robert Louis Stevenson novel Treasure Island |
| 43% | CIA | 3 | Org. depicted in some spy novels |
| 42% | CANON | 5 | "The 7th ___," 2016 legal thriller novel by Robert Dugoni set in San Francisco |
| 42% | THEPARSIFAL | 11 | & 17A 1982 novel by Robert Ludlum |
| 42% | THEOSTERMAN | 11 | & 16D 1972 novel by Robert Ludlum |
| 41% | JASONBOURNE | 11 | Robert Ludlum protagonist |