| Lansing, Mich.Lansing, Mich.· Mar 15 – May 10, 1980 | Mar 15 – May 10, 1980 | Classical | 6 | 1985 | 5 |
| Lancashire ChampionshipMorecambe· May 3 – 5, 1980 | May 3 – 5, 1980 | Classical | 8 | 2254 | 6 |
Rostov Rostov RUS Rostov Rostov RUS· 1980 | 1980 | Classical | 20 | 2282 | 14 |
Bugojno Bugojno BIH· 1980 | 1980 | Classical | 17 | 2561 | 102 |
Phillips & Drew Knights London ENG· Apr 11 – 25, 1980 | Apr 11 – 25, 1980 | Classical | 16 | 2359 | 88 |
| KladovoKladovo· Apr 10 – 24, 1980 | Apr 10 – 24, 1980 | Classical | 17 | 2411 | 128 |
Hull Open Hull CAN· Apr 19 – 20, 1980 | Apr 19 – 20, 1980 | Classical | 8 | 1689 | 5 |
| GER-W chT 7980GER-W chT 7980· Mar 9 – Apr 20, 1980 | Mar 9 – Apr 20, 1980 | Classical | 19 | 2337 | 13 |
Lloyds Bank U18 London ENG· Apr 18 – 20, 1980 | Apr 18 – 20, 1980 | Classical | 8 | 1910 | 6 |
Baku Baku AZE Baku Baku AZE· Mar 30 – Apr 18, 1980 | Mar 30 – Apr 18, 1980 | Classical | 15 | 2465 | 37 |
Belgrade Belgrade SRB· Mar 11 – Apr 16, 1980 | Mar 11 – Apr 16, 1980 | Classical | 18 | 2309 | 97 |
London Phillips&Drew Open London ENG· Apr 13, 1980 | Apr 13, 1980 | Classical | 11 | 2356 | 9 |
Birmingham Easter Open Birmingham ENG· Apr 3 – 12, 1980 | Apr 3 – 12, 1980 | Classical | 11 | 2065 | 10 |
Baku Baku AZE· Apr 12, 1980 | Apr 12, 1980 | Classical | 20 | 2466 | 98 |
Oslo Oslo NOR· Apr 6, 1980 | Apr 6, 1980 | Classical | 16 | 2333 | 9 |
| Toronto OpenToronto Open· Apr 4 – 6, 1980 | Apr 4 – 6, 1980 | Classical | 7 | 1891 | 6 |
| Harrogate OpenHarrogate· Apr 4 – 6, 1980 | Apr 4 – 6, 1980 | Classical | 8 | 2090 | 6 |
| YUG-ch35Skender Vakuf· Feb 4 – Apr 5, 1980 | Feb 4 – Apr 5, 1980 | Classical | 43 | 2364 | 285 |
| DenmarkDenmark· Mar 30 – Apr 4, 1980 | Mar 30 – Apr 4, 1980 | Classical | 29 | 2153 | 22 |
| OWL-EM HalleOWL-EM Halle· 1980 | 1980 | Classical | 7 | 2088 | 6 |
London ENG London ENG· 1980 | 1980 | Classical | 9 | 2427 | 5 |
Sochi junior Sochi RUS· 1980 | 1980 | Classical | 7 | 2348 | 7 |
Sochi YM Sochi RUS· 1980 | 1980 | Classical | 8 | 2329 | 9 |
Londen London ENG· 1980 | 1980 | Classical | 14 | 2561 | 14 |
| Bydgoszcz womenBydgoszcz women· 1980 | 1980 | Classical | 12 | 2204 | 20 |
It Phillips & Drew Kings London ENG· 1980 | 1980 | Classical | 12 | 2457 | 11 |
| Ch NetherlandsCh Netherlands· 1980 | 1980 | Classical | 7 | 2385 | 6 |
OWL Ch Halle GER· 1980 | 1980 | Classical | 11 | 2092 | 46 |
Bydgoszczy Bydgoszcz POL· 1980 | 1980 | Classical | 7 | 2128 | 8 |
Bydgoszcz women Bydgoszcz POL· 1980 | 1980 | Classical | 11 | 2148 | 10 |
Sochi RUS Sochi RUS· 1980 | 1980 | Classical | 12 | 2228 | 6 |
Phillips&Drew London ENG· 1980 | 1980 | Classical | 19 | 2566 | 86 |
Leeuwarden ch-NED Leeuwarden ch-NED· 1980 | 1980 | Classical | 17 | 2417 | 89 |
Candidats qf3 Mexico City MEX· 1980 | 1980 | Classical | 3 | 2628 | 23 |
| It BTrnava it B· Mar 18 – 30, 1980 | Mar 18 – 30, 1980 | Classical | 7 | 2205 | 6 |
| Trnava it BTrnava it B· Mar 17 – 30, 1980 | Mar 17 – 30, 1980 | Classical | 14 | 2216 | 48 |
Tirnavia-B Trnava SVK· Mar 16 – 29, 1980 | Mar 16 – 29, 1980 | Classical | 14 | 2164 | 36 |
Tirnavia-A Trnava SVK· Mar 17 – 27, 1980 | Mar 17 – 27, 1980 | Classical | 14 | 2431 | 23 |
Tirnavia-A Trnava SVK Tirnavia-A Trnava SVK· Mar 17 – 27, 1980 | Mar 17 – 27, 1980 | Classical | 12 | 2446 | 46 |
Sarajevo Sarajevo BIH Sarajevo Sarajevo BIH· Mar 26, 1980 | Mar 26, 1980 | Classical | 15 | 2463 | 23 |
Lloyds Bank U21 London ENG· Mar 21 – 23, 1980 | Mar 21 – 23, 1980 | Classical | 8 | 2232 | 6 |
Knights of Spring Toronto CAN· Mar 21 – 23, 1980 | Mar 21 – 23, 1980 | Classical | 8 | 1855 | 6 |
Lone Pine Open Lone Pine, CA USA· Mar 19 – 23, 1980 | Mar 19 – 23, 1980 | Classical | 38 | 2439 | 60 |
Malaga Ch Malaga ESP· Feb 2 – Mar 19, 1980 | Feb 2 – Mar 19, 1980 | Classical | 13 | 2077 | 16 |
Lone Pine Lone Pine, CA USA· Mar 19, 1980 | Mar 19, 1980 | Classical | 36 | 2400 | 33 |
Bucharest Bucharest ROU· Mar 4 – 19, 1980 | Mar 4 – 19, 1980 | Classical | 21 | 2392 | 136 |
| 1. division 1979-80· Jan 13 – Mar 16, 1980 | Jan 13 – Mar 16, 1980 | Classical | 34 | 2214 | 26 |
Reykjavik Reykjavik ISL· Feb 23 – Mar 10, 1980 | Feb 23 – Mar 10, 1980 | Classical | 18 | 2490 | 66 |
Blackpool Open Blackpool ENG· Mar 7 – 9, 1980 | Mar 7 – 9, 1980 | Classical | 6 | 2287 | 5 |
Montreal Montreal CAN· Mar 9, 1980 | Mar 9, 1980 | Classical | 21 | 2186 | 19 |