The following are the names and details of the tallest buildings and structures in Sri Lanka. Most of them are constructed in Colombo, the commercial capital of Sri Lanka. Buildings with over 20 floors, and structures over 50 m (160 ft) are listed below.
| Rank | Building title | Height | Highest floor | City | Primary use | Completion |
| 1 | NEB Tower | 256 m (840 ft) | 70 | Kotte | Mixed | 2011 |
| 2 | Diamond Tower | 246 m (810 ft) | 60 | Colombo | Mixed | 2011 |
| 3 | Ocean View Residencies | 152 m (500 ft) | 47 | Colombo | Residential | |
| 4 | Ceylinco Celestial Residencies | 130 m (430 ft) | 45 | Colombo | Residential | 2010 |
| 5 | Dawson Grand | 42 | Colombo | Residential | 2009 | |
| 6 | World Trade Center | 152 m (500 ft) | 40 | Colombo | Commercial | 1995 |
| 7 | Empire Tower | 37 | Colombo | Residential | 2009 | |
| 8 | GS Towers | 36 | Colombo | Mixed | 2010 | |
| 9 | The Emperor | 132 m (430 ft) | 35 | Colombo | Residential | 2010 |
| 10 | JAIC Hilton | 129 m (420 ft) | 34 | Colombo | Mixed | 1997 |
| 11 | BOC Headquarters | 105 m (340 ft) | 32 | Colombo | Commercial | 1985 |
| 12 | Iceland Residencies | 31 | Colombo | Residential | 2008 | |
| 13 | Havelock City | 30 | Colombo | Mixed | 2011 | |
| 14 | Monarch Tower | 30 | Colombo | 2007 | ||
| 15 | The Fairmount | 30 | Kotte | Residential | 2009 | |
| 16 | Crescat Residencies | 113 m (370 ft) | 25 | Colombo | Mixed | 1997 |
| 17 | Royal Park | 25 | Colombo | Residential | ||
| 18 | UDA Scheme Tower | 78 m (260 ft) | 24 | Colombo | Residential | 1985 |
| 19 | HNB Tower | 23 | Colombo | Commercial | 2002 | |
| 20 | Hilton Hotel | 21 | Colombo | Commercial | 1987 | |
| 21 | Premier Pacific Topaz | 20 | Colombo | Mixed |
| Rank | Title of Structure | Height (meters) | Floor Count | City | Primary Use | Groundbreaking | Completion |
| 1 | Norocholai Coal Power Station | 150 m (492 ft) | N/A | Puttalam | Power | 2006 | 2010 |
| 2 | Jetavanaramaya | 120 m (394 ft) | N/A | Anuradhapura | Religious | 273 - 301 | |
| 3 | Ruwanwelisaya | 92 m (302 ft) | N/A | Anuradhapura | Religious | 2nd Century BC |
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