March |
| 10 | 4-10 Mar | ITF World Tennis Tour (Men) | Porec | CRO | M15 | EL, Results | | | |
| 11 | 11-17 Mar | ITF World Tennis Tour (Men) | Rovinj | CRO | M15 | EL, Results | | | |
| 12 | 16-24 Mar | TEJT 16&U | Veli LošInj | CRO | Category 3 | FS, EL, Results, OP | | | |
| 12 | 17-24 Mar | TEJT 12&U | Vrsar | CRO | Category 1 | FS, EL, Results, OP | | | |
| 12 | 18-24 Mar | ITF World Tennis Tour (Men) | Opatija | CRO | M15 | EL, Results | | | |
| 12 | 18-24 Mar | ATP Challenger | Zadar | CRO | Challenger 100 | MS, MD, SQ | | | |
| 13 | 23-31 Mar | TEJT 16&U | Rijeka | CRO | Category 3 | FS, EL, Results, OP | | | |
| 14 | 30 Mar-7 Apr | TEJT 14&U | Veli LošInj | CRO | Category 2 | FS, EL, Results, OP | | Photobook | |
April |
| 14 | 1-6 Apr | ITF World Tennis Tour (Women) | Split | CRO | W75 | EL, Results | | | |
| 14 | 2-7 Apr | ITF World Tennis Masters | Cavtat | CRO | MT400 | EL, Results | | | |
| 15 | 6-14 Apr | TEJT 14&U | Vinkovci | CRO | Category 3 | FS, EL, Results, OP | | | |
| 15 | 10-16 Apr | ATP Challenger | Split | CRO | Challenger 75 | MS, MD, SQ | | | |
| 15 | 12-14 Apr | UNIQLO Tour | Split | CRO | ITF Futures | Results | | | |
| 16 | 13-20 Apr | TEJT 14&U | Solin | CRO | Category 3 | FS, EL, Results, OP | | | |
| 16 | 15-21 Apr | ITF World Tennis Tour (Men) | Dubrovnik | CRO | M15 | EL, Results | | | |
| 17 | 20-28 Apr | TEJT 14&U | Zagreb | CRO | Category 2 | FS, EL, Results, OP | | | |
| 17 | 22-28 Apr | ITF World Tennis Tour (Men) | Split | CRO | M15 | EL, Results | | | |
| 18 | 29 Apr-4 May | TEJT 12&U | Čakovec | CRO | Category 2 | FS | | | |
| 18 | 29 Apr-5 May | ITF World Tennis Tour (Women) | Osijek | CRO | W15 | | | | |
| 18 | 29 Apr-5 May | ITF World Tennis Tour (Men) | Osijek | CRO | M15 | | | | |
May |
| 20 | 13-19 May | ITF World Tennis Tour (Women) | Zagreb | CRO | W75 | | | | |
| 21 | 20-25 May | ITF World Tennis Tour (Juniors) | Cakovec | CRO | J100 | | | | |
| 21 | 20-26 May | ITF World Tennis Tour (Men) | Bol | CRO | M15 | | | | |
| 21 | 20-26 May | ITF World Tennis Tour (Women) | Bol | CRO | W15 | | | | |
June |
| 23 | 3-9 Jun | ATP Challenger | Zagreb | CRO | Challenger 75 | | | | |
| 23 | 4-9 Jun | WTA Tour | Makarska Open | CRO | WTA 125 | | | | |
| 25 | 17-19 Jun | UNIQLO Tour | Zagreb | CRO | ITF Futures | | | | |
| 26 | 24-30 Jun | TEJT 16&U | ČAkovec | CRO | Category 2 | FS | | | |
July |
| 29 | 15-21 Jul | TEJT 12&U | Stobreč | CRO | Category 2 | FS | | | |
| 30 | 22-28 Jul | ATP Tour | Plava Laguna Croatia Open Umag | CRO | ATP 250 | | | | |
| 31 | 29 Jul-4 Aug | TEJT 16&U | ĐAkovo | CRO | Category 3 | FS | | | |
August |
| 34 | 19-25 Aug | ITF World Tennis Masters | Opatija | CRO | MT400 | | | | |
September |
| 36 | 2-8 Sep | TEJT 14&U | Zadar | CRO | Category 3 | FS | | | |
| 38 | 16-22 Sep | TEJT 14&U | Vrsar | CRO | Category 3 | FS | | | |
| 39 | 23-29 Sep | TEJT 12&U | Poreč | CRO | Category 2 | FS | | | |
| 40 | 30 Sep-6 Oct | TEJT 14&U | Poreč | CRO | Category 3 | FS | | | |
October |
| 42 | 14-20 Oct | TEJT 12&U | Split | CRO | Category 2 | FS | | | |
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