| Wall of Ice | ru13 | Rules | David E. Cohen | 7 | |
| War Bonds | ys06 | | J. Van de Graff | | |
| War in Bosnia | pb10 | Rules | Stephen Agar | 7 | |
| War in North America | na05 | Rules | Will Nesbitt | 6 | |
| War in the Americas | na07 | Rules | Macario Reyes | 10 | |
| War of Europe | rs46 | Rules | Ian Giles | 7 | |
| War of Europe II? | rs55 | Rules | ? (same as rs46?) | 7 | |
| War of the Great Jewels | tf02 | | Lew Pulsipher | 8 | |
| War of the Great Jewels II | tf03 | | Lew Pulsipher and John Cain | 8 | |
| War of the Ring | tm01 | | Lew Pulsipher | | |
| War of the Ring II | ts32 | | Graham Staplehurst | 9 | |
| Warhammer Diplomacy | fm05 | Rules | Daryl Lonnon | | |
| Warlock Diplomacy | rg20 | Rules | ??? | 7 | |
| Warmonger | cc03 | | Larry Dunning | | |
| Wars of the Roses | pe05 | Rules | Roger Sandell | 7 | |
| Wars of the Roses II | pe16 | Rules | Mark Nelson | 5 | |
| Warwick | pe12 | Rules | Stephen Agar | 9 | |
| We’ve Been Shafted By a Guy Who Cancelled Out on Us | rb14 | Rules | George Wallace | 6 | |
| Westphalia VI(Europe 1648-I) | hb02 | | Howard Mahler | 8 | |
| Westphalia VII | hb03 | | Howard Mahler | 8 | |
| Westphalia VIII (Europe 1648-II) | hb04 | | Howard Mahler | 8 | |
| When You Don’t Have Seven | rb96 | | Roger Cooper | | |
| Wild Bill Donovan Variant | rb45 | Rules | Larry Peery | 23 | |
| Win Place & Show Diplomacy | ys09 | | Stven Carlberg | | |
| Winter 1898 | rb78 | Rules | Randy Davis | 7 | |
| Winter 1898 II | rb111 | | Randy Davis and Stephen Agar | 7 | |
| Winter 1900 (similar to Flexible Build Diplomacy, rs20) | rs35 | Rules | John Norris | 7 | |
| Winter Eleven-Man Variant II | cc06 | | Fred Winter | 11 | |
| Witch World I | fw02 | | Lew Pulsipher | 5 | |
| Witch World II | fw01 | | Lew Pulsipher | 5 | |
| Witchworld III | fw03 | | John Robertson | 6 | |
| Wizard’s Diplomacy | rb56 | | Ian Whitchurch | 7 | |
| Woolworth Diplomacy (I) | rm22 | | Glenn Overby (included with rm21) | 5 | |
| Woolworth Diplomacy II | cb16 | | Glenn Overby (includes cb15, cb17, cb18) | 5 | |
| Woolworth Diplomacy II-A | cb15 | | Glenn Overby (included with cb16) | 5 | |
| Woolworth Diplomacy II-B | cb17 | | Glenn Overby (included with cb16) | 5 | |
| Woolworth Diplomacy II-D | cb19 | Rules | Glenn Overby and Fred Davis | 5 | |
| Woolworth Diplomacy III | cb51 | | Glenn Overby (CE 12) | 5 | |
| Woolworth Diplomacy III-D | cb52 | | Glenn Overby (CE 12) | 5 | |
| Woolworth Diplomacy II-M | cb50 | | Glenn Overby and Jim Bragg (CE 12) | 5 | |
| World Diplomacy | gf03 | | William Stapel | 7 | |
| World Diplomacy II | gf18 | | Mark Stegeman | 8 | |
| World Diplomacy III | gf19 | | Mark Stegeman | 8 | |
| World Diplomacy IV | gf21 | | Mark Stegeman | 8 | |
| World Diplomacy IX [II] | gf36 | Rules | David Norman | 17 | |
| World Diplomacy V | gf22 | | William Stapel | 7 | |
| World Diplomacy VI | gf23 | | Mark Stegeman | 8 | |
| World Diplomacy VII [I] | gf34 | Rules | David Caldwell | 31 | |
| World Diplomacy VIII [1] | gf35 | Rules | David Norman | 17 | |
| World Domination I | gp26 | | Richard Egan (WD II draft) | 8 | |
| World Domination II | gp27 | | Richard Egan | 8 | |
| World Powers | gp03 | | Richard Ware | 9 | |
| World Variant(“I”) | gp04 | | Karl Pettis | 21 | |
| World War I Diplomacy | rx07 | Rules | John Boardman | 2 | |
| World War III | qp02 | | Scott Rosenberg | 8 | |
| World War IIIb | gf24 | | Bob Sergeant Note: Not related to WW III, qp02 | 15 | |
| World War IV (v.1) | gf37 | Rules | Tom Reinecker | 29 | |
| World War IV (v.4.1) | gf38 | | Tom Reinecker | 30 | |
| World War IV Diplomacy | gf04 | Rules | Steve Langs | 6 | |
| World War IV Formal | gf39 | Rules | Tom Reinecker, Tom Mulledy & E. Sabatine | 30 | |
| World War One (b) | rx20 | | Author ??. Cy by M. Lewis (needs rx07) | 2 | |
| World War Two | qh12 | | Chris Edwards (based on “1939”) | 6 | |
| World War Two Diplomacy II | qh13 | | Chris Edwards | 6 | |
| World-8 Diplomacy | gf32 | | Chris Warren | 8 | |
| Worldip I | gp02 | | Enrico Manfredi | 6 | |
| Wraparound Diplomacy | cb61 | Rules | James Millington & Robert Schone | 7 | |
| Wüsten Diplomacy | vb11 | | Martin Treichd | 8 | |