| CQ July 2013 - Contest Calendar | |
| All year | CQ DX Marathon |
| June 22-23 | ARRL Field Day |
| June 22-23 | King of Spain SSB Contest |
| June 22-23 | Marconi Memorial HF Contest |
| June 22-23 | Ukrainian DX DIGI Contest |
| June 29 | Championship Guadeloupe 10M SSB |
| July 1-7 | 10-10 Int. Spirit of 76 QSO Party |
| July 1 | RAC Canada Day Contest |
| July 4 | MI QRP July 4th CW Sprint |
| July 6-7 | DL-DX RTTY Contest |
| July 6-7 | Original QRP Contest |
| July 6-7 | Venezuelan Ind. Day Contest |
| July 7 | DARC 10 Meter Digital Contest |
| July 12 | FIST Summer Sprint |
| July 13-14 | IARU HF Championship |
| July 20-21 | CQ WW VHF Contest |
| July 20-21 | DMC RTTY Contest |
| July 20-21 | North American RTTY QSO Party |
| July 27-28 | MARAC QSO Party |
| July 27-28 | New Jersey QSO Party |
| July 27-28 | RSGB IOTA Contest |
| Aug. 3 | European HF Championship |
| Aug. 3-4 | North American CW QSO Party |
| Aug. 3-4 | ARRL UHF Contest |
| Aug. 3-4 | 10-10 Int’l Summer Contest SSB |
| Aug. 4 | SARL HF Phone Contest |
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