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 | 27 Apr-5 May | TEJT 12&U | ČAkovec | CRO | Category 2 | FS, EL, Results, OP | | | |
| 18 | 29 Apr-5 May | ITF World Tennis Tour (Women) | Osijek | CRO | W15 | EL, Results | | | |
| 18 | 29 Apr-5 May | ITF World Tennis Tour (Men) | Osijek | CRO | M15 | EL, Results | | | |
May |
| 20 | 13-19 May | ITF World Tennis Tour (Women) | Zagreb | CRO | W75 | EL, Results | | | |
| 21 | 20-25 May | ITF World Tennis Tour (Juniors) | Cakovec | CRO | J100 | EL, Results | | | |
| 21 | 20-26 May | ITF World Tennis Tour (Men) | Bol | CRO | M15 | EL, Results | | | |
| 21 | 20-26 May | ITF World Tennis Tour (Women) | Bol | CRO | W15 | EL, Results | | | |
| 22 | 27 May-2 Jun | ITF World Tennis Tour (Women) | Bol | CRO | W15 | EL, Results | | | |
| 22 | 27 May-2 Jun | ITF World Tennis Tour (Men) | Bol | CRO | M15 | EL, Results | | | |
June |
| 23 | 3-9 Jun | Tennis Europe | European Masters Championships, Veli Losinj | CRO | MT1000 | EL, Results, OP | | | |
| 23 | 3-9 Jun | ATP Challenger | Zagreb | CRO | Challenger 75 | MS, MD, SQ | | | |
| 23 | 4-9 Jun | WTA Tour | Makarska Open | CRO | WTA 125 | WS, WD, SQ | | | |
| 25 | 17-19 Jun | UNIQLO Tour | Zagreb | CRO | ITF Futures | Results | | | |
| 25 | 20-23 Jun | UNIQLO Tour | Zagreb | CRO | ITF Futures | Results | | | |
| 26 | 22-29 Jun | TEJT 16&U | ČAkovec | CRO | Category 2 | FS, EL, Results, OP | | | |
July |
| 28 | 8-14 Jul | ITF World Tennis Tour (Men) | Umag | CRO | M15 | EL, Results | | | |
| 29 | 13-20 Jul | TEJT 12&U | Stobreč | CRO | Category 2 | FS, EL, Results, OP | | | |
| 29 | 14-20 Jul | TEJT 16&U | ĐAkovo | CRO | Category 3 | FS, EL, Results, OP | | | |
| 30 | 22-27 Jul | ITF World Tennis Tour (Juniors) | Stobrec | CRO | J30 | EL, Results | | | |
| 30 | 22-28 Jul | ATP Tour | Plava Laguna Croatia Open Umag | CRO | ATP 250 | MS, MD, SQ | | | |
| 30 | 25-27 Jul | UNIQLO Tour | Umag | CRO | ITF Futures | Results | | | |
| 31 | 29 Jul-3 Aug | ITF World Tennis Tour (Juniors) | Vinkovci | CRO | J30 | EL, Results | | | |
August |
| 32 | 5-11 Aug | ITF World Tennis Tour (Women) | Zagreb | CRO | W50 | EL, Results | | | |
| 35 | 26 Aug-1 Sep | ITF World Tennis Masters | Opatija | CRO | MT400 | EL, Results | | | |
September |
| 36 | 2-8 Sep | TEJT 14&U | Zadar | CRO | Category 3 | FS, EL, Results, OP | | | |
| 38 | 16-22 Sep | TEJT 14&U | Vrsar | CRO | Category 3 | FS, EL, Results, OP | | | |
| 39 | 21-28 Sep | TEJT 12&U | Poreč | CRO | Category 2 | FS, EL, Results, OP | | | |
| 39 | 22-27 Sep | ITF World Tennis Masters | Bol | CRO | MT400 | Results | | | |
| 39 | 23-29 Sep | ITF World Tennis Tour (Juniors) | Rijeka | CRO | J30 | Results | | | |
| 40 | 28 Sep-6 Oct | TEJT 14&U | Poreč | CRO | Category 3 | FS, EL, Results, OP | | | |
| 40 | 30 Sep-5 Oct | ITF World Tennis Tour (Juniors) | Veli Losinj | CRO | J60 | EL, Results | | | |
| 40 | 30 Sep-6 Oct | ITF World Tennis Tour (Women) | Sibenek | CRO | W75 | EL, Results | | | |
October |
|
| 40 | 4-6 Oct | UNIQLO Tour | Šibenik | CRO | ITF Futures | Results | | | |
| 41 | 7-12 Oct | ITF World Tennis Masters | Dubrovnik | CRO | MT200 | Results | | | |
| 41 | 7-13 Oct | ITF World Tennis Tour (Juniors) | Porec | CRO | J60 | Results | | | |
| 42 | 12-20 Oct | TEJT 12&U | Split | CRO | Category 2 | FS, EL, Results, OP | | | |
| 42 | 14-20 Oct | ITF World Tennis Tour (Women) | Bol | CRO | W15 | EL, Results | | | |
| 42 | 14-20 Oct | ITF World Tennis Tour (Men) | Bol | CRO | M15 | EL, Results | | | |
| 42 | 14-20 Oct | ITF World Tennis Tour (Juniors) | Dubrovnik | CRO | J100 | EL, Results | | | |
| 43 | 21-27 Oct | ITF World Tennis Tour (Women) | Bol | CRO | W15 | EL, Results | | | |
| 43 | 25-27 Oct | UNIQLO Tour | Bol | CRO | ITF Futures | Results | | | |