The 2014 Tilia Slovenia Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2014 ATP Challenger Tour. It took place in Portorož, Slovenia between 7 and 14 July 2014.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Blaž Kavčič | 98 | 1 | ||
 Luxembourg | Gilles Müller | 103 | 2 | |
 Russian Federation | Evgeny Donskoy | 114 | 3 | |
 Spain | Adrián Menéndez Maceiras | 169 | 4 | |
 France | David Guez | 170 | 5 | |
 Italy | Thomas Fabbiano | 172 | 6 | |
| Italy | Flavio Cipolla | 199 | 7 | |
 Serbia | Ilija Bozoljac | 200 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Erik Crepaldi Evgeny Karlovskiy| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Russian Federation | Victor Baluda | Russian Federation | Konstantin Kravchuk | 253 | 1 | |
 Belarus | Sergey Betov | Belarus | Aliaksandr Bury | 254 | 2 | |
| Spain | Adrián Menéndez Maceiras | Franko Škugor | 256 | 3 | ||
 Australia | Jordan Kerr | France | Fabrice Martin | 344 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2014 Tilia Slovenia Open – Singles.
Gilles Müller 7–5, 6–7(4–7), 6–1See main article: 2014 Tilia Slovenia Open – Doubles.
Sergey Betov / Aliaksandr Bury def. Ilija Bozoljac / Flavio Cipolla 6–0, 6–3