March |
| 11 | 10-16 Mar | ITF World Tennis Tour (Men) | Porec | CRO | M15 | EL, Results | | | |
| 12 | 15-23 Mar | TEJT 16&U | Veli LošInj | CRO | Category 3 | FS, EL, Results, OP | | | |
| 12 | 17-23 Mar | ITF World Tennis Tour (Men) | Rovinj | CRO | M15 | EL, Results | | | |
| 12 | 17-23 Mar | ATP Challenger | Zadar | CRO | Challenger 75 | MS, MD, SQ | | | |
| 13 | 22-30 Mar | TEJT 12&U | Vrsar | CRO | Category 1 | FS, EL, Results, OP | | | |
| 13 | 22-30 Mar | TEJT 14&U | Veli LošInj | CRO | Category 2 | FS, EL, Results, OP | | Photobook | |
| 13 | 24-30 Mar | ITF World Tennis Tour (Men) | Opatija | CRO | M15 | EL, Results | | | |
| 14 | 29 Mar-6 Apr | TEJT 16&U | Rijeka | CRO | Category 3 | FS, EL, Results, OP | | | |
| 14 | 31 Mar-6 Apr | ITF World Tennis Tour (Juniors) | Vrsar | CRO | J300 | EL, Results | | | |
April |
| 15 | 5-13 Apr | TEJT 14&U | Vinkovci | CRO | Category 3 | FS, EL, Results, OP | | | |
| 15 | 7-12 Apr | ITF World Tennis Masters | Cavtat | CRO | MT400 | EL, Results | | | |
| 15 | 11-13 Apr | UNIQLO Tour | Split | CRO | ITF Futures | Results | | | |
| 16 | 12-20 Apr | TEJT 14&U | Solin | CRO | Category 3 | FS, EL, Results, OP | | | |
| 16 | 14-16 Apr | UNIQLO Tour | Dubrovnik | CRO | ITF Futures | Results | | | |
| 16 | 14-20 Apr | ITF World Tennis Tour (Men) | Dubrovnik | CRO | M15 | EL, Results | | | |
| 18 | 19-28 Apr | TEJT 14&U | Zagreb | CRO | Category 2 | FS, EL, Results, OP | | | |
| 18 | 27 Apr-4 May | TEJT 12&U | Čakovec | CRO | Category 2 | FS, EL, Results, OP | | | |
May |
| 20 | 12-17 May | ATP Challenger | Zagreb | CRO | Challenger 75 | MS, MD, SQ | | | |
| 20 | 12-18 May | ITF World Tennis Tour (Women) | Zagreb | CRO | W75 | EL, Results | | | |
| 21 | 19-25 May | ITF World Tennis Tour (Women) | Bol | CRO | W35 | EL, Results | | | |
| 21 | 19-25 May | ITF World Tennis Tour (Men) | Bol | CRO | M25 | EL, Results | | | |
| 22 | 26 May-1 Jun | ITF World Tennis Tour (Men) | Bol | CRO | M25 | EL, Results | | | |
| 22 | 26 May-1 Jun | ITF World Tennis Tour (Women) | Bol | CRO | W35 | EL, Results | | | |
June |
| 23 | 2-8 Jun | ITF World Tennis Tour (Women) | Osijek | CRO | W15 | EL, Results | | | |
| 23 | 3-8 Jun | WTA Tour | Makarska Open | CRO | WTA 125 | WS, WD, SQ | | | |
| 24 | 8-13 Jun | ITF World Tennis Masters | Bol | CRO | MT400 | EL, Results | | | |
| 25 | 16-22 Jun | ITF World Tennis Tour (Women) | Zagreb | CRO | W75 | EL, Results | | | |
| 25 | 20-22 Jun | UNIQLO Tour | Zagreb | CRO | ITF Futures | Results | | | |
| 26 | 23-25 Jun | UNIQLO Tour | Zagreb | CRO | ITF Futures | Results | | | |
| 26 | 23-28 Jun | TEJT 16&U | ČAkovec | CRO | Category 2 | FS, EL, Results, OP | | | |
| 26 | 23-29 Jun | ITF World Tennis Tour (Men) | Zagreb | CRO | M15 | EL, Results | | | |
July |
| 29 | 14-19 Jul | TEJT 12&U | Dubrovnik | CRO | Category 2 | FS, EL, Results, OP | | | |
| 29 | 14-19 Jul | TEJT 16&U | ĐAkovo | CRO | Category 3 | FS, EL, Results, OP | | | |
| 30 | 20-26 Jul | ATP Tour | Plava Laguna Croatia Open, Umag | CRO | ATP 250 | | | | |
| 30 | 21-27 Jul | ITF World Tennis Tour (Juniors) | Dubrovnik | CRO | J30 | EL, Results | | | |
| 30 | 24-26 Jul | UNIQLO Tour | Umag | CRO | ITF Futures | | | | |
| 31 | 28 Jul-3 Aug | ITF World Tennis Tour (Juniors) | Vinkovci | CRO | J30 | EL, Results | | | |
August |
| 34 | 18-24 Aug | ITF World Tennis Tour (Juniors) | Cakovec | CRO | J100 | EL, Results | | | |
| 35 | 25-31 Aug | ITF World Tennis Masters | Opatija | CRO | MT400 | EL, Results | | | |
September |
| 36 | 1-7 Sep | TEJT 14&U | Zadar | CRO | Category 3 | FS, EL, Results, OP | | | |
| 38 | 15-21 Sep | TEJT 14&U | Vrsar | CRO | Category 3 | FS | | | |
| 39 | 22-28 Sep | TEJT 12&U | Poreč | CRO | Category 2 | FS | | | |
| 40 | 29 Sep-5 Oct | TEJT 14&U | Poreč | CRO | Category 3 | FS | | | |
October |
| 42 | 13-19 Oct | TEJT 12&U | Split | CRO | Category 2 | FS | | | |
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