| Challenger Kobe | 11/07 02:00 | 25 | [239] Jason Jung v Omar Jasika [269] | 2-6,6-4,6-4 | |
| Challenger Canberra 2 | 11/03 00:00 | 27 | [250] Omar Jasika v Taro Daniel [108] | 6-7,4-6 | |
| Challenger Canberra 2 | 11/01 01:30 | 26 | [250] Omar Jasika v Jason Kubler [349] | 6-2,6-3 | |
| Challenger Canberra 2 | 10/30 03:50 | 25 | [245] Omar Jasika v Harry Bourchier [361] | 6-4,7-6 | |
| Challenger Canberra 2 Qual | 10/28 04:20 | 46 | Omar Jasika v Edward Bourchier | Walkover | |
| ITF Australia F7 | 10/13 05:00 | 27 | Omar Jasika v Jason Kubler | Retired | |
| ITF Australia F7 | 10/12 00:00 | 26 | [253] Omar Jasika v Sem Verbeek [301] | 6-3,6-2 | |
| ITF Australia F7 | 10/11 00:00 | 25 | [253] Omar Jasika v Daniel Nolan [471] | 6-1,6-0 | |
| ITF Australia F6 | 10/04 02:40 | 25 | [314] Scott Puodziunas v Omar Jasika [252] | 6-1,6-2 | |
| ITF Australia F5 | 09/28 05:15 | 26 | Omar Jasika v Benjamin Mitchell | 6-7,6-7 | |
| ITF Australia F5 | 09/27 04:25 | 25 | Omar Jasika v Lucas Vuradin | 6-0,6-2 | |
| Challenger Gwangju | 09/18 03:10 | 25 | [211] Mohamed Safwat v Omar Jasika [264] | 7-6,6-3 | |
| Challenger Shanghai | 09/15 02:30 | 27 | [310] Matthias Bachinger v Omar Jasika [264] | 6-1,6-1 | |
| Challenger Shanghai | 09/13 04:20 | 26 | [264] Omar Jasika v Tatsuma Ito [165] | 4-6,6-3,7-5 | |
| Challenger Shanghai | 09/12 04:35 | 25 | [476] Zhizhen Zhang v Omar Jasika [264] | 5-7,2-6 | |
| Challenger Lexington | 07/31 17:30 | 25 | [258] Omar Jasika v Blaz Rola [247] |
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| Challenger Binghamton | 07/25 14:00 | 25 | Omar Jasika v Alexander Bublik | Cancelled | |
| Challenger Gatineau | 07/18 19:15 | 25 | [252] Omar Jasika v Thomas Fabbiano [86] | 6-0,1-6,1-6 | |
| Challenger Winnetka | 07/12 18:20 | 26 | [106] Tennys Sandgren v Omar Jasika [273] | 6-2,6-1 | |
| Challenger Winnetka | 07/10 21:00 | 25 | [273] Omar Jasika v Jared Hiltzik [395] | 4-6,6-3,6-2 | |
| Challenger Seoul | 05/09 04:10 | 25 | [252] Omar Jasika v Marco Chiudinelli [188] | 4-6,7-6,6-7 | |
| Challenger Gimcheon | 05/02 05:00 | 25 | [159] Teymuraz Gabashvili v Omar Jasika [252] | 6-2,6-2 | |
| ITF Australia F3 | 03/22 23:30 | 26 | Jeremy Beale v Omar Jasika | 7-5,6-3 | |
| ITF Australia F3 | 03/20 23:00 | 25 | [157] Steven De Waard v Omar Jasika [248] | 3-6,5-7 | |
| ITF Australia F2 | 03/18 00:00 | 28 | [252] Omar Jasika v Marc Polmans [225] | 4-6,3-6 | |
| ITF Australia F2 | 03/17 01:45 | 27 | Greg Jones v Omar Jasika | 4-6,4-6 | |
| ITF Australia F2 | 03/16 01:50 | 26 | [485] Alex Bolt v Omar Jasika [252] | 0-6,2-6 | |
| ITF Australia F2 | 03/13 23:00 | 25 | Lucas Vuradin v Omar Jasika | 4-6,3-6 | |
| ITF Australia F2 Qual | 03/12 23:00 | 62 | Omar Jasika v Harry Lim | 6-1,6-0 | |
| ITF Australia F2 Qual | 03/11 23:00 | 62 | Omar Jasika v David Barclay | Retired |
Omar Jasika (Bosnian pronunciation: [jǎsika]; born 18 May 1997) is an Australian professional tennis player. Jasika has a career-high singles ranking of World No. 223 achieved on 30 January 2023 and a career-high doubles ranking of World No. 220 achieved on 23 May 2016.
Jasika is the 2014 US Open boys' singles champion. He along with Naoki Nakagawa also won the 2014 US Open boys' doubles title defeating Rafael Matos and João Menezes in the final. In winning both, Jasika became the first player in 28 years to win both the boys’ singles and doubles events at the US Open.