Piia Suomalainen
Piia Suomalainen is a Finnish tennis player.
Suomalainen has won five singles and five doubles titles on the ITF Women's Circuit. On 10 October 2011, she reached her best singles ranking of world No. 356. On 15 January 2007, she peaked at No. 524 in the doubles rankings.
Since her debut for the Finland Fed Cup team in 2002, Suomalainen has a 37–33 record in Fed Cup competition.
ITF finals (10–11)
Singles (5–8)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 27 November 2005 | Sunderland, United Kingdom | Hard |  Margit Rüütel | 5–7, 0–6 |
| Runner-up | 2. | 16 July 2006 | Birkerød, Denmark | Clay |  Anne Schäfer | 4–6, 2–6 |
| Runner-up | 3. | 20 August 2006 | Savitaipale, Finland | Clay |  Eva Fernández Brugués | 4–6, 6–3, 2–6 |
| Runner-up | 4. | 19 November 2006 | Sunderland, United Kingdom | Hard | Martina Pavelec | 2–6, 4–6 |
| Runner-up | 5. | 19 August 2007 | Savitaipale, Finland | Clay |  Marcella Koek | 7–5, 4–6, 5–7 |
| Runner-up | 6. | 24 October 2009 | Pretoria, South Africa | Hard |  Irina Ramialison | 5–7, 2–6 |
| Runner-up | 7. | 27 June 2010 | Cleveland, United States | Clay |  Madison Keys | 2–6, 4–6 |
| Runner-up | 8. | 8 August 2010 | Savitaipale, Finland | Clay |  Ulrikke Eikeri | 5–7, 4–6 |
| Winner | 1. | 7 November 2010 | Manila, Philippines | Hard |  Luksika Kumkhum | 6–3, 6–3 |
| Winner | 2. | 31 July 2011 | Tampere, Finland | Clay | Dinah Pfizenmaier | 7–5, 6–0 |
| Winner | 3. | 20 May 2012 | Landisville, United States | Hard | Elizabeth Lumpkin | 7–6, 6–1 |
| Winner | 4. | 5 August 2012 | Savitaipale, Finland | Clay | Laëtitia Sarrazin | 3–6, 6–3, 6–3 |
| Winner | 5. | 24 July 2016 | Tampere, Finland | Clay |  Emma Laine | 0–6, 6–2, 6–3 |
Doubles (5–3)
| Result | No. | Date | Category | Tournament | Surface | Partner | Opponents | Score |
| Runner-up | 1. | 11 March 2006 | $10,000 | Sunderland, United Kingdom | Hard |  Nadja Roma | Carmen Klaschka Korina Perkovic | 2–6, 3–6 |
| Winner | 1. | 19 August 2006 | $10,000 | Savitaipale, Finland | Clay | Katariina Tuohimaa |  Davinia Lobbinger  Alise Vaidere | 7–5, 6–3 |
| Runner-up | 2. | 4 November 2006 | $10,000 | Stockholm, Sweden | Hard | Katariina Tuohimaa | Diana Eriksson  Hanne Skak Jensen | w/o |
| Winner | 2. | 18 November 2006 | $10,000 | Sunderland, United Kingdom | Hard | Katariina Tuohimaa | Laura Haberkorn Martina Pavelec | 6–3, 6–4 |
| Winner | 3. | 3 August 2007 | $10,000 | Tampere, Finland | Clay | Katariina Tuohimaa | Hanne Skak Jensen Marcella Koek | 6–2, 6–4 |
| Winner | 4. | 23 October 2009 | $10,000 | Pretoria, South Africa | Hard | Sina Haas |  Lucia Kovarčíková  Zuzana Linhová | 7–6, 6–2 |
| Runner-up | 3. | 27 July 2013 | $10,000 | Tampere, Finland | Clay | Emma Laine | Julia Wachaczyk Nina Zander | 4–6, 4–6 |
| Winner | 5. | 3 August 2013 | $10,000 | Savitaipale, Finland | Clay | Emma Laine |  Anastasiya Komardina  Akvilė Paražinskaitė | 6–4, 6–4 |