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| | 01-May-2008 | International Darts League | Netherlands - CANCELLED | WDF | CANCELLED | | + |
| | 01-May-2008 | Premier League Darts | Metro Radio Arena, Newcastle | PDC | Premier League | | Results |
| | 02-May-2008 | May-Day Weekend Darts Festival | Hemsby | BDO | Grand Prix | | + |
| | 03-May-2008 | Fife Open | Glenrothes | BDO | Grand Prix | | + |
| | 03-May-2008 | International Darts League | Netherlands - CANCELLED | BDO | CANCELLED | | + |
| | 09-May-2008 | West Lothian Open | Bathgate | BDO | Grand Prix | | + |
| | 10-May-2008 | Hungarian Open | Budapest | WDF | 4 | | + |
| | 15-May-2008 | Mediterranean Cup | Protaras, Cyprus | WDF | U | | + |
| | 16-May-2008 | US Open | Connecticut | PDC | PREMIER | | + |
| | 16-May-2008 | Welsh Open | Prestatyn | WDF | 1 | | + |
| | 17-May-2008 | Welsh Open | Prestatyn | BDO | BDO Inv/Grand Prix | | + |
| | 18-May-2008 | Cyprus Open | Protaras, Cyprus | WDF | 4 | | + |
| | 23-May-2008 | England Masters Open | TBA | WDF | U | | + |
| | 23-May-2008 | England Masters Open | Sunderland | BDO | Grand Prix | | + |
| | 23-May-2008 | Norway Open | Tønsberg | WDF | 3 | | + |
| | 24-May-2008 | Norway Open | Norway | BDO | BDO Inv | | + |
| | 26-May-2008 | Premier League Darts | CIA, Cardiff | PDC | Premier League | | Results |
| | 29-May-2008 | Norway Open | Finland | WDF | 3 | | + |
| | 30-May-2008 | League of Legends | Circus Tavern, Purflee | OTH | N/A | | + |
| | 31-May-2008 | Cheshire Open | Northwich | BDO | Grand Prix | | + |
| | 31-May-2008 | Hants Echo Novotel Open | Southampton | BDO | Grand Prix | | + |
| | 31-May-2008 | Greek Open | Athens | WDF | 4 | | + |
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