| Lucas Siqueira | |
| Fullname: | Lucas Santos Siqueira |
| Height: | 1.81m (05.94feet) |
| Birth Date: | 23 September 1988 |
| Birth Place: | Bom Jardim, Brazil |
| Currentclub: | Ituano |
| Position: | Defensive midfielder |
| Youthyears1: | 2006–2007 |
| Youthclubs1: | Friburguense |
| Years1: | 2008–2015 |
| Clubs1: | Friburguense |
| Caps1: | 123 |
| Goals1: | 19 |
| Years2: | 2008 |
| Clubs2: | → Sampaio Corrêa-RJ (loan) |
| Years3: | 2009 |
| Clubs3: | → Sampaio Corrêa-RJ (loan) |
| Years4: | 2013 |
| Clubs4: | → Macaé (loan) |
| Caps4: | 19 |
| Goals4: | 2 |
| Years5: | 2014 |
| Clubs5: | → Macaé (loan) |
| Caps5: | 18 |
| Goals5: | 2 |
| Years6: | 2015 |
| Clubs6: | → Vasco da Gama (loan) |
| Caps6: | 27 |
| Goals6: | 3 |
| Years7: | 2016 |
| Clubs7: | Paysandu |
| Caps7: | 52 |
| Goals7: | 8 |
| Years8: | 2017 |
| Clubs8: | Ceará |
| Caps8: | 8 |
| Goals8: | 1 |
| Years9: | 2018 |
| Clubs9: | Novorizontino |
| Caps9: | 10 |
| Goals9: | 7 |
| Years10: | 2018–2019 |
| Clubs10: | CRB |
| Caps10: | 49 |
| Goals10: | 3 |
| Years11: | 2020 |
| Clubs11: | Portuguesa |
| Caps11: | 9 |
| Goals11: | 0 |
| Years12: | 2020–2021 |
| Clubs12: | Remo |
| Caps12: | 85 |
| Goals12: | 9 |
| Years13: | 2022– |
| Clubs13: | Ituano |
| Caps13: | 56 |
| Goals13: | 1 |
| Club-Update: | 4 January 2022 |
Lucas Santos Siqueira (born 23 September 1988), known as Lucas Siqueira or simply Lucas, is a Brazilian footballer who plays as a defensive midfielder for Ituano.