Source: Wikipedia
Tennis Asia
Tennis Europe
Tennis Africa
Tennis Oceania
Tennis Central and Caribbean America
Tennis South America
Tennis Canada
Tennis America
Davis Cup
Current Champion- Great Britain (2015)
Fed Cup
Current Champion- Czech Republic (2015)
Hopman Cup
Current Champion- Australia (2016)
Grand Slam
Australian Open (January)
Current Champion (2016):
Men's singles- Novak Djokovic
Women's singles- Angelique Kerber
Men's doubles- Jamie Murray & Bruno Soares
Women's doubles- Martina Hingis & Sania Mirza
Mixed doubles- Elena Vesnina & Bruno Soares
French Open (May/June)
Current Champion (2016):
Men's singles- Novak Djokovic
Women's singles- Garbiñe Muguruza
Men's doubles- Feliciano López & Marc López
Women's doubles- Caroline Garcia & Kristina Mladenovic
Mixed doubles- Martina Hingis & Leander Paes
Wimbledon (June/July)
Current Champion (2016):
Men's singles- Andy Murray
Women's singles- Serena Williams
Men's doubles- Pierre-Hugues Herbert & Nicolas Mahut
Women's doubles- Serena Williams & Venus Williams
Mixed doubles- Leander Paes & Martina Hingis
US Open (August/September)
Current Champion (2015):
Men's singles- Novak Djokovic
Women's singles- Flavia Pennetta
Men's doubles- Pierre-Hugues Herbert & Nicolas Mahut
Women's doubles- Martina Hingis & Sania Mirza
Mixed doubles- Martina Hingis & Leander Paes