Ivo Klec (born 28 November 1980) is a Slovak former tennis player. He played mainly on the ATP Challenger Tour. On the ITF Futures circuit, he has claimed 29 titles, 14 singles and 15 doubles. In addition, he has also won two ATP Challenger doubles titles.

No.	Date	Tournament	Surface	Opponent in the final	Score
1.	21 April 2003	Mishref	Hard	Mohammed Ghareeb	3–6, 6–4, 6–4
2.	28 April 2003	Mishref	Hard	Florin Mergea	3–6, 6–3, 6–4
3.	5 May 2003	Mishref	Hard	Florin Mergea	6–4, 6–4
4.	16 August 2004	Enschede	Clay	Jeroen Masson	6–3, 6–1
5.	28 March 2005	Rabat	Clay	Adam Chadaj	6–4, 6–7(4–7), 6–4
6.	14 November 2005	Gran Canaria	Clay	Rui Machado	6–3, 6–3
7.	13 July 2009	Damascus	Hard	Sadik Kadir	6–0, 6–1
8.	3 August 2009	Ottershaw	Hard	Morgan Phillips	6–4, 6–3
9.	30 March 2010	Mobile	Hard	Greg Ouellette	6–1, 6–4
10.	24 November 2010	Khartoum	Clay	Aldin Šetkić	6–2, 6–2
11.	1 December 2010	Khartoum	Clay	Aldin Šetkić	6–3, 7–5
12.	27 September 2013	Mishref	Hard	Marcus Willis	3–6, 6–1, 6–4
13.	21 December 2013	Doha	Hard	Niels Lootsma	6–1, 4–6, 6–3
14.	20 December 2014	Lomé	Hard	Jaime Pulgar García	2–6, 7–6(7–4), 6–2

• Ivo Klec at the Association of Tennis Professionals
• Ivo Klec at the International Tennis Federation
• Ivo Klec at the Davis Cup