According to the Council on Tall Buildings and Urban Habitat (CTBUH), these are the top 21 skyscrapers in the world to date.
1. Burj Khalifa
Location: Dubai, United Arab Emirates
Height: 2,717 feet
Completion Date: 2010
2. Shanghai Tower
Location: Shanghai, China
Height: 2,073
Completion Date: 2015
3. Makkah Royal Clock Tower
Location: Mecca, Saudi Arabia
Height: 1,972
Completion Date: 2012
4. One World Trade Center
Location: New York City, United States
Height: 1,776 feet
Completion Date: 2014
5. TAIPEI 101
Location: Taipei, Taiwan
Height: 1,667 feet
Completion Date: 2004
6. Shanghai World Financial Center
Location: Shanghai, China
Height: 1,614 feet
Completion Date: 2008
7. International Commerce Centre
Location: Hong Kong, China
Height: 1,588 feet
Completion Date: 2010
8. Petronas Twin Tower 1 and 2
Location: Kuala Lumpur, Malaysia
Height: 1,483 feet, each
Completion Date: 1998
9. Zifeng Tower
Location: Nanjing, China
Height: 1,476 feet
Completion Date: 2010
10. Willis Tower
Location: Chicago, United States
Height: 1,451 feet
Completion Date: 1974
The data has been taken from here.