| Tomoyoshi Koyama | |
| Nationality: | Japanese |
| Birth Date: | 19 March 1983 |
| Birth Place: | Kanagawa, Japan |
| Current Team: | Japan Post HondaDream (MFJ) Musashi Boon Siew Honda (ARRC) |
| Bike Number: | 230 (MFJ) 634 (ARRC) |
| 125 Active Years: | , – |
| 125 Manufacturers: | Yamaha, Honda, Malaguti, KTM, Loncin, Aprilia |
| 125 Championships: | 0 |
| 125 Race Starts: | 98 |
| 125 Race Wins: | 1 |
| 125 Podiums: | 9 |
| 125 Poles: | 0 |
| 125 Fastest Laps: | 0 |
| 125 Total Points: | 553 |
| 125 Last Season: | 2010 |
| 125 Last Position: | 8th (127 pts) |
| 250 Manufacturers: | Yamaha |
| 250 Championships: | 0 |
| 250 Race Starts: | 2 |
| 250 Race Wins: | 0 |
| 250 Podiums: | 0 |
| 250 Poles: | 0 |
| 250 Fastest Laps: | 0 |
| 250 Total Points: | 0 |
| 250 Last Season: | 2003 |
| 250 Last Position: | NC (0 pts) |
| Moto2 Active Years: | –, 2014–2015 |
| Moto2 Manufacturers: | Suter, TSR, NTS |
| Moto2 Championships: | 0 |
| Moto2 Race Starts: | 13 |
| Moto2 Race Wins: | 0 |
| Moto2 Podiums: | 0 |
| Moto2 Poles: | 0 |
| Moto2 Fastest Laps: | 0 |
| Moto2 Total Points: | 3 |
| Moto2 Last Season: | 2015 |
| Moto2 Last Position: | 26th (3 pts) |
is a professional motorcycle road racer who currently races in the MFJ All-Japan Road Race ST600 Championship and the Asia Road Race SS600 Championship, riding a Honda CBR600RR.
Koyama was born in Sagamihara, Kanagawa, Japan. After competing in Grand Prix races as a wild card since 2000 – having been the champion of the MFJ All Japan Road Race GP125 Championship in 2000, and finished in the top five for three successive seasons in the MFJ All Japan Road Race GP250 Championship – Koyama joined the series full-time in 2005, with Ajo Motorsport. His best result of the season was 2nd at Phillip Island, and he also was best rookie of the season. 2006 wasn't as good for him, but after he moved to KTM in 2007, he scored his first victory at the 2007 Catalan motorcycle Grand Prix. 2008 was much less successful for both Koyama and KTM with a best place of 6th his only top 10 finish in the first 10 races. He ends the 2008 season with 7th at Valencia and 17th in the final standings, four places behind the most successful KTM rider (Marc Márquez) in an unsuccessful year for the Austrian concern. For 2009 Koyama joined the smaller Loncin team, alongside Alexis Masbou, and struggled to score points. In 2010 Koyama rode an RS Aprillia for Racing Team Germany. Koyama finished eighth in the championship, taking a best placing of second at the German Grand Prix at the Sachsenring.
After failing to find a full-time Grand Prix ride for the season, he competed in both the Spanish Moto2 championship (where he finished third), and in the MFJ All Japan Road Race J-GP2 Championship, finishing eighth. Koyama also competed in three Grand Prix Moto2 races towards the end of the season; he replaced the injured Kenan Sofuoğlu at Misano and Aragón, as well as a wild-card appearance at Motegi,[1] but failed to score points in any of the appearances. Koyama remained in the Spanish Moto2 championship in 2012, where he finished ninth overall. After Roberto Rolfo parted company with Technomag-CIP at Grand Prix level,[2] Koyama completed the season with the team; in six races, he finished outside the points in them all.
| Season | Class | Motorcycle | Team | Number | Race | Win | Podium | Pole | Pts | Plcd | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 125cc | Yamaha | SP Tadao Racing Team | 98 | 1 | 0 | 0 | 0 | 0 | NC | |
| 2003 | 250cc | Yamaha | SP Tadao Racing Team | 67 | 2 | 0 | 0 | 0 | 0 | NC | |
| 2004 | 125cc | Yamaha | SP Tadao Racing Team | 89 | 2 | 0 | 0 | 0 | 7 | 27th | |
| 2005 | 125cc | Honda | Ajo Motorsport | 71 | 16 | 0 | 2 | 0 | 119 | 8th | |
| 2006 | 125cc | Malaguti | Malaguti Ajo Corse | 71 | 13 | 0 | 0 | 0 | 49 | 15th | |
| 2007 | 125cc | KTM | Red Bull KTM 125 | 71 | 17 | 1 | 6 | 0 | 193 | 3rd | |
| 2008 | 125cc | KTM | ISPA KTM Aran | 71 | 16 | 0 | 0 | 0 | 41 | 17th | |
| 2009 | 125cc | Loncin | Loncin Racing | 71 | 16 | 0 | 0 | 0 | 17 | 24th | |
| 2010 | 125cc | Aprilia | Racing Team Germany | 71 | 17 | 0 | 1 | 0 | 127 | 8th | |
| Moto2 | Suter | Technomag-CIP | 7 | 3 | 0 | 0 | 0 | 0 | NC | ||
| TSR | CIP with TSR | ||||||||||
| Moto2 | Suter | Technomag-CIP | 75 | 6 | 0 | 0 | 0 | 0 | NC | ||
| 2014 | Moto2 | NTS | Teluru Team JiR Webike | 71 | 3 | 0 | 0 | 0 | 0 | NC | |
| 2015 | Moto2 | NTS | NTS T.Pro Project | 71 | 1 | 0 | 0 | 0 | 3 | 26th | |
| Total | 113 | 1 | 9 | 0 | 556 |
(key) (Races in bold indicate pole position; races in italics indicate fastest lap)