The tallest building in Connecticut is City Place I in Hartford which is 535 feet (163 meters) tall and has 38 stories.
| Rank | Name | Image | Heightft (m) | Floors | Year | City | Notes | Use |
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| 1 | City Place I | 535 (163) | 38 | 1980 | Hartford | Tallest building in Hartford and Connecticut since 1980. | Office |
| 2 | Travelers Tower | 528 (161) | 24 | 1919 | Hartford | Was the tallest building in the world outside of New York City upon completion. | Office |
| 3 | Goodwin Square | 522 (159) | 30 | 1989 | Hartford | Office tower was built into the historic Goodwin Hotel. | Office |
| 4 | Mohegan Sun | 486 (149) | 36 | 2002 | Uncasville | Tallest building in Connecticut outside of Hartford. | Hotel/Casino |
| 5 | Hartford 21 | {{CSS image crop | Image = StateHouseSqHartford.jpg | bSize = 400 | cWidth = 100 | cHeight = 180 | oTop = 50 | oLeft = 230 | Location = center
}} | 440 (134) | 36 | 2006 | Hartford | Built on the site of the former Civic Center Mall. | Residential |
| 6 | Otis Elevator Test Tower | 383 (117) | 38 | Bristol | Tallest building in Bristol. Owned by the Otis Elevator Company. | Industrial |
| 7 | Connecticut Financial Center | 383 (117) | 26 | 1990 | New Haven | Tallest building in New Haven. | Office |
| 8 | 777 Main Street | {{CSS image crop | Image = StateHouseSqHartford.jpg | bSize = 300 | cWidth = 100 | cHeight = 180 | oTop = 0 | oLeft = 90 | Location = center
}} | 361 (110) | 26 | 1967 | Hartford | Until 2011, the Hartford office of Bank of America. Converted to residential use in 2015. | Residential |
| 9 | Trump Parc Stamford | 350 (107) | 34 | 2009 | Stamford | Tallest building in Stamford | Residential |
| 10 | 280 Trumbull Street | 348 (106) | 28 | 1984 | Hartford | Office |
| 11 | 360 State Street | 338 (103) | 31 | 2010 | New Haven | Residential |
| 12 | One Financial Plaza | 335 (102) | 26 | 1975 | Hartford | Also known as the Gold Building. | Office |
| 13 | Foxwoods | 325 (99) | 26 | 2007 | Ledyard | Hotel/Casino |
| 14 | Knights of Columbus Building | 321 (98) | 23 | 1969 | New Haven | | Name | Height*ft (m) | Floors* | Year*(est.) | Status | Notes |
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