Sini Tuuli Susanne Latvala (née Pöyry, born 3 February 1980 in Kankaanpää) is a retired female hammer thrower from Finland. Her personal best throw is 69.16 metres, achieved in July 2004 in Kaustinen. She was nicknamed "Sintsa".
| Representing | |||||
|---|---|---|---|---|---|
| 1998 | Annecy, France | 2nd | 61.76 m | ||
| Budapest, Hungary | 15th | 58.61 m | |||
| 2000 | Sydney, Australia | 12th | 62.49 m | ||
| 2001 | European U23 Championships | Amsterdam, Netherlands | bgcolor=silver | 2nd | 64.71 m |
| World Championships | Edmonton, Canada | 16th | 63.76 m | ||
| 2002 | Munich, Germany | 5th | 67.47 m | ||
| 2003 | Paris, France | 14th | 65.01 m | ||
| 2004 | Athens, Greece | 23rd | 66.05 m | ||
| 2005 | World Championships | Helsinki, Finland | 22nd | 64.24 m | |
| 2006 | Gothenburg, Sweden | 14th | 65.72 m | ||