Cecilia Estlander (born 26 February 1992 in Helsinki^[1]) is a Finnish tennis player.

On 11 October 2010, Estlander reached her best singles ranking of world number 956. On 18 July 2011, she peaked at world number 878 in the doubles rankings.

Estlander has a 1–3 record for Finland in Fed Cup competition.

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Runner-up	1.	23 May 2011	Bucharest, Romania	Clay	Katharina Negrin	Laura-Ioana Andrei Camelia Hristea	6–7(5–7), 1–6

Edition	Stage	Date	Location	Against	Surface	Opponent	W/L	Score
2009 Fed Cup Europe/Africa Zone Group III	R/R	25 April 2009	Marsa, Malta	Greece	Hard	Eleni Daniilidou	L	1–6, 1–6

Edition	Stage	Date	Location	Against	Surface	Partner	Opponents	W/L	Score
2009 Fed Cup Europe/Africa Zone Group III	R/R	23 April 2009	Marsa, Malta	Ireland	Hard	Heini Salonen	Jenny Claffey Lynsey McCullough	L	2–6, 3–6
		24 April 2009		Algeria		Piia Suomalainen	Yasmine Alkema Assia Halo	W	6–4, 7–6(8–6)
		25 April 2009		Greece		Heini Salonen	Eleni Daniilidou Eirini Georgatou	L	0–6, 1–6

• Cecilia Estlander at the Women's Tennis Association
• Cecilia Estlander at the International Tennis Federation
• Cecilia Estlander at the Billie Jean King Cup (archived)