| January | 16–18 January | January Swim Series | OCBC Aquatic Centre |
| 6–8 February | February Swim Series | OCBC Aquatic Centre |
| February | 14 & 15 February | Junior Swim Clinic | Hwa Chong Pool |
| 28 February – 1 March | SAQ SwimFaster Awards | Singapore Sports School |
| March | March | X Lab Tryouts (Internal) | XCL World Academy (Yishun) |
| 13–15 March | 56th SNAG 2026 (Junior) | OCBC Aquatic Centre |
| 17–22 March | 56th SNAG 2026 (Senior) | OCBC Aquatic Centre |
| 30 March | X Lab Squad Move-Ups | XCL World Academy (Yishun) |
| April | 9 April | Masters Invitational: Swim & Connect | Singapore |
| April | XCL Spring Splash | XCL World Academy (Yishun) |
| 11 April | Chinese Swimming Club Swim Masters Invitational 2026 – Leg 1 | Chinese Swimming Club |
| 13–16 April | 63rd National Primary Schools Swimming Championships | OCBC Aquatic Centre |
| 20–24 April | 63rd National Secondary Schools Swimming Championships | OCBC Aquatic Centre |
| 25 & 26 April | Junior Swim Clinic | Hwa Chong Pool |
| May | 1 & 2 May | SAQ Swim Faster Awards | OCBC Aquatic Centre |
| June | 5–7 June or 26–28 June | X Lab Training Camp (Overseas) | Overseas |
| June | 20th Singapore National Swimming Championships (SNSC) | Singapore |
| July | 4 – 6 Jul | Pesta Sukan | Singapore |
| 11 & 12 Jul | High-Performance Swim Clinic | XCL World Academy (Yishun) |
| August | 22 & 23 August | Junior Swim Clinic | XCL World Academy (Yishun) |
| 15 Aug | X Lab Sanctioned Meet | XCL World Academy (Yishun) |
| September | 12 September | Atomic Splash (Sports Schooling Annual Swimming Meet, Internal) | XCL World Academy (Yishun) |
| October | 10 & 11 October | High-Performance Swim Clinic | XCL World Academy (Yishun) |
| 10 October | Chinese Swimming Club Swim Masters Invitational 2026 – Leg 2 | Chinese Swimming Club |
| November | November | X Lab Tryouts (Internal) | XCL World Academy (Yishun) |
| 15 & 16 November | SAQ SwimFaster Awards | Singapore Sports School |
| November | 39th Junior Inter-Club Age Group Swimming Championships 2026 | Singapore |
| December | December | X Lab Squad Move-Ups | XCL World Academy (Yishun) |
| December | SAQ SwimFaster Awards | Singapore |
