| Dortmund· Apr 9 – May 23, 2003 | Apr 9 – May 23, 2003 | Classical | 8 | 1949 | 7 |
| Attica Ch OpenAttica· May 5 – 23, 2003 | May 5 – 23, 2003 | Classical | 102 | 2050 | 290 |
Serbia/Montenegro Team Ch Budva MNE· May 18 – 23, 2003 | May 18 – 23, 2003 | Classical | 43 | 2377 | 36 |
TCh-Serbia & Montenegro Budva MNE· May 18 – 23, 2003 | May 18 – 23, 2003 | Classical | 75 | 2343 | 89 |
Quebec Montcalm Open 7th Quebec CAN· May 8 – 22, 2003 | May 8 – 22, 2003 | Classical | 7 | 1917 | 5 |
| Sotra VarturneringenSotra· Jan 30 – May 22, 2003 | Jan 30 – May 22, 2003 | Classical | 5 | 1314 | 7 |
| Open Championship Attica· May 7 – 21, 2003 | May 7 – 21, 2003 | Classical | 14 | 1876 | 9 |
53. ch-HUN Heviz HUN· May 12 – 20, 2003 | May 12 – 20, 2003 | Classical | 11 | 2560 | 37 |
| 3. Heviz HUN, Men Championship· May 12 – 20, 2003 | May 12 – 20, 2003 | Classical | 7 | 2568 | 12 |
Albert Boxer Classic Open Winnipeg CAN· May 17 – 19, 2003 | May 17 – 19, 2003 | Classical | 9 | 1823 | 13 |
Memorial P.Keres Open Vancouver BC CAN· May 16 – 19, 2003 | May 16 – 19, 2003 | Classical | 12 | 2220 | 8 |
Ontario Open Kingston CAN· May 17 – 19, 2003 | May 17 – 19, 2003 | Classical | 9 | 1948 | 8 |
Winnipeg Winnipeg CAN· Jan 19 – May 19, 2003 | Jan 19 – May 19, 2003 | Classical | 10 | 1878 | 9 |
28. Keres Memorial Vancouver BC CAN· May 16 – 19, 2003 | May 16 – 19, 2003 | Classical | 47 | 2038 | 76 |
Keres Memorial 28th Vancouver BC CAN· May 16 – 19, 2003 | May 16 – 19, 2003 | Classical | 44 | 2079 | 66 |
3. Intl.CSVN Leiden NED· May 16 – 18, 2003 | May 16 – 18, 2003 | Classical | 7 | 2011 | 9 |
3. CSVN Leiden NED· May 16 – 18, 2003 | May 16 – 18, 2003 | Classical | 6 | 2129 | 7 |
15sen.DSEM Senioren Bad Wiessee GER· May 10 – 18, 2003 | May 10 – 18, 2003 | Classical | 25 | 2044 | 17 |
Marathon Granby CAN· May 16 – 18, 2003 | May 16 – 18, 2003 | Classical | 12 | 1955 | 17 |
| Santiago CC Puente AltoSantiago de Chile· Mar 30 – May 18, 2003 | Mar 30 – May 18, 2003 | Classical | 7 | 1885 | 7 |
Bad Wiessee (10.05.-18.05) Bad Wiessee GER· May 10 – 18, 2003 | May 10 – 18, 2003 | Classical | 39 | 2052 | 27 |
| NRW Team Ch U12Hiddenhausen· May 17 – 18, 2003 | May 17 – 18, 2003 | Classical | 31 | 1544 | 35 |
| Rimouski OpenRimouski· May 17 – 18, 2003 | May 17 – 18, 2003 | Classical | 5 | 1693 | 5 |
Capablanca Memorial Premier I 38th Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 14 | 2335 | 27 |
Capablanca Mem Premier II Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 18 | 2429 | 98 |
Eesti EST, Men Ch 2003 Eesti EST· May 17 – 18, 2003 | May 17 – 18, 2003 | Classical | 27 | 2195 | 24 |
Capablanca Mem Premier I Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 20 | 2273 | 70 |
| BRA Ch U20 GirlsFlorianopolis· May 15 – 18, 2003 | May 15 – 18, 2003 | Classical | 23 | 1849 | 66 |
Capablanca Memorial Elite 38th Havana CUB· May 7 – 18, 2003 | May 7 – 18, 2003 | Classical | 11 | 2568 | 15 |
Capablanca Mem Elite Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 15 | 2475 | 62 |
Capablanca Memorial Mixto 38th Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 13 | 2245 | 32 |
| BRA Ch U20Florianopolis· May 14 – 18, 2003 | May 14 – 18, 2003 | Classical | 45 | 1924 | 127 |
Bad Wiessee GER, Men Ch (s) 2003 Bad Wiessee GER· May 11 – 18, 2003 | May 11 – 18, 2003 | Classical | 105 | 2141 | 178 |
Capablanca Mem Mixto Havana CUB· May 6 – 18, 2003 | May 6 – 18, 2003 | Classical | 15 | 2189 | 45 |
Detroit op1 Detroit, MI USA· May 17 – 18, 2003 | May 17 – 18, 2003 | Classical | 14 | 1771 | 12 |
GER Ch Seniors 15th Bad Wiessee GER· May 10 – 18, 2003 | May 10 – 18, 2003 | Classical | 156 | 2058 | 183 |
Detroit, MI Detroit, MI USA· Feb 15 – May 18, 2003 | Feb 15 – May 18, 2003 | Classical | 23 | 1667 | 22 |
| 67. Bulgarian Championship· May 7 – 17, 2003 | May 7 – 17, 2003 | Classical | 6 | 2465 | 8 |
Ch Bulgaria Sofia BUL· May 7 – 17, 2003 | May 7 – 17, 2003 | Classical | 5 | 2450 | 6 |
Capablanca Memorial Premier II 38th Havana CUB· May 9 – 17, 2003 | May 9 – 17, 2003 | Classical | 8 | 2413 | 6 |
| CICL Open· May 17, 2003 | May 17, 2003 | Classical | 13 | 1820 | 15 |
| Gatineau OutaouaisGatineau· Apr 29 – May 17, 2003 | Apr 29 – May 17, 2003 | Classical | 4 | 1987 | 9 |
Steinfurt Kreisklasse 0203 GER· Jan 11 – May 17, 2003 | Jan 11 – May 17, 2003 | Classical | 20 | 1389 | 19 |
| 6. Ukrainian Universiad B2· May 13 – 17, 2003 | May 13 – 17, 2003 | Classical | 8 | 2332 | 7 |
67. ch-BUL Sofia BUL· May 7 – 17, 2003 | May 7 – 17, 2003 | Classical | 12 | 2418 | 31 |
| Santiago CALF OpenSantiago de Chile· Apr 26 – May 17, 2003 | Apr 26 – May 17, 2003 | Classical | 31 | 1815 | 47 |
XXI Festival Isola d'Elba A Capoliveri ITA· May 10 – 16, 2003 | May 10 – 16, 2003 | Classical | 13 | 2118 | 11 |
BUL Ch 67th Sofia BUL· May 8 – 16, 2003 | May 8 – 16, 2003 | Classical | 10 | 2381 | 12 |
| ISR Team ChIsrael· Jan 18 – May 16, 2003 | Jan 18 – May 16, 2003 | Classical | 87 | 2423 | 181 |
| Torun ChTorun· Feb 21 – May 16, 2003 | Feb 21 – May 16, 2003 | Classical | 12 | 2019 | 63 |