| Liu Sijia 刘斯佳 | |
| Birth Date: | 20 July 1988 |
| Birth Place: | Harbin, China[1] |
| Curling Club: | Harbin CC, Harbin, Heilongjiang |
| World Championship Appearances: | 2 |
| World Mixed Doubles Championship Appearances: | 2 |
| Pacific Championship Appearances: | 4 |
Liu Sijia (; born July 20, 1988) is a Chinese curler from Harbin. She skipped the Chinese National Women's Curling Team at both the and World Women's Curling Championships.
As a junior curler Liu won a gold medal at the 2010 Pacific Junior Curling Championships and silvers at the 2008 and 2009 Pacific Juniors. She skipped the Chinese team to a seventh place finish at the 2010 World Junior Curling Championships, finishing with a 3–6 record.
In her first season out of juniors, Liu was the lead for the Chinese team, skipped by Wang Bingyu at the 2010 Pacific Curling Championships, winning a silver medal. Four years later, Liu skipped China at the 2014 World Women's Curling Championship, finishing seventh with a 6–5 record. The following year she also skipped the Chinese team at the 2015 World Women's Curling Championship, where they lost in a tiebreaker to Scotland's Eve Muirhead.[2]
Liu won her first World Curling Tour event at the 2014 Cloverdale Cash Spiel.[3]