| Team: | San Jose Sharks |
| Former Teams: | Edmonton Oilers Florida Panthers |
| League: | NHL |
| Position: | Defence |
| Shoots: | Left |
| Height Ft: | 6 |
| Height In: | 6 |
| Weight Lb: | 235 |
| Nationality: | Russia |
| Birth Date: | April 10, 1981 |
| Birth Place: | Murmansk, USSR |
| Draft: | 36th overall |
| Draft Year: | 1999 |
| Draft Team: | Edmonton Oilers |
| Career Start: | 2002 |
Alexei Semenov (Russian: Алексей Семёнов, ''Aleksey Semyonov'') (born April 10, 1981 in Murmansk, USSR) plays defence for the San Jose Sharks in the National Hockey League. He was selected by the Edmonton Oilers in the second round of the 1999 NHL Entry Draft, 36th overall.
In 2001, he was awarded the Max Kaminsky Trophy as the best defenceman in the Ontario Hockey League. After playing three full seasons for the Oilers and their top farm club, the Hamilton Bulldogs, he was traded to the Florida Panthers for a conditional draft pick in the 2006 NHL Entry Draft on November 19, 2005. Upset at his assignment to the Rochester Americans at the start of the 2006–07 season, Semenov left Rochester after four games to play for Salavat Yulaev Ufa in Russia. On July 27,2007. Semenov signed a one-year contract with the San Jose Sharks.
Semenov is known for registering one of the hardest shots in the NHL, routinely clocking around 105 miles per hour.
| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | G | A | Pts | PIM | GP | G | A | Pts | PIM | ||
| 1997–98 | Krylya Sovetov Moscow 2 | Russia-3 | 52 | 1 | 2 | 3 | 48 | — | — | — | — | — | ||
| 1998–99 | SKA Saint Petersburg 2 | Russia-4 | 19 | 0 | 1 | 1 | 20 | — | — | — | — | — | ||
| 1998–99 | Sudbury Wolves | OHL | 28 | 0 | 3 | 3 | 28 | 2 | 0 | 0 | 0 | 4 | ||
| 1999–00 | Sudbury Wolves | OHL | 65 | 9 | 35 | 44 | 135 | 12 | 1 | 3 | 4 | 23 | ||
| 1999–00 | Hamilton Bulldogs | AHL | — | — | — | — | — | 3 | 0 | 0 | 0 | 0 | ||
| 2000–01 | Sudbury Wolves | OHL | 65 | 21 | 42 | 63 | 4106 | 12 | 4 | 13 | 17 | 17 | ||
| 2001–02 | Hamilton Bulldogs | AHL | 78 | 5 | 11 | 16 | 67 | — | — | — | — | — | ||
| 2002–03 | Edmonton Oilers | NHL | 46 | 1 | 6 | 7 | 58 | 6 | 0 | 0 | 0 | 0 | ||
| 2002–03 | Hamilton Bulldogs | AHL | 37 | 4 | 3 | 7 | 45 | — | — | — | — | — | ||
| 2003–04 | Edmonton Oilers | NHL | 46 | 2 | 3 | 5 | 32 | — | — | — | — | — | ||
| 2004–05 | SKA Saint Petersburg | RSL | 50 | 0 | 8 | 8 | 26 | — | — | — | — | — | ||
| 2005–06 | Salavat Yulayev Ufa | RSL | 2 | 0 | 1 | 1 | 2 | — | — | — | — | — | ||
| 2005–06 | Edmonton Oilers | NHL | 11 | 1 | 1 | 2 | 17 | — | — | — | — | — | ||
| 2005–06 | Florida Panthers | NHL | 16 | 1 | 1 | 2 | 21 | — | — | — | — | — | ||
| 2005–06 | Rochester Americans | AHL | 3 | 0 | 0 | 0 | 7 | — | — | — | — | — | ||
| 2006–07 | Florida Panthers | NHL | 23 | 0 | 5 | 5 | 28 | — | — | — | — | — | ||
| 2006–07 | Rochester Americans | AHL | 4 | 0 | 0 | 0 | 6 | — | — | — | — | — | ||
| 2006–07 | Salavat Yulaev Ufa | RSL | 20 | 1 | 2 | 3 | 32 | — | — | — | — | — | ||
| 2007–08 | San Jose Sharks | NHL | 22 | 1 | 3 | 4 | 36 | 2 | 0 | 0 | 0 | 2 | ||
| OHL Totals | 158 | 30 | 80 | 110 | 269 | 26 | 5 | 16 | 21 | 44 | ||||
| AHL Totals | 122 | 9 | 14 | 23 | 125 | 3 | 0 | 0 | 0 | 10 | ||||
| RSL Totals | 72 | 1 | 11 | 12 | 60 | — | — | — | — | — | ||||
| NHL Totals | 164 | 6 | 19 | 25 | 192 | 8 | 0 | 0 | 0 | 2 | ||||