| Women's singles | Australian Open | 
IOCImportant eventsJanuary| WTA Premier | Category | Champion | Finalist | Score in the final | Brisbane Premier
| Women's singles | 
2015 in tennis results- February 13 – December 6: 2015 ATP Champions Tour
- * February 13 – 15: 2015 Delray Beach Open in the
- ** Team International defeated Team USA 6–3.
- * August 13 – 16: 2015 Optima Open in Knokke-Heist
- ** Xavier Malisse defeated Pete Sampras 6–7, 7–5, 13–11, in the final.
- * October 8 – 11: 2015 Reyes Del Tenis in Majorca
- ** Àlex Corretja defeated Thomas Enqvist 3–6, 6–4, 10–7, in the final.
- * October 24 & 25: 2015 Kia Motors Champions Cup Tennis in Seoul
- ** Fernando González defeated Michael Chang 7–6 and 6–2, in the final.
- * October 27 – 29: 2015 Monterrey Open in
- ** Pete Sampras defeated fellow American, John McEnroe, 6–3 and 7–6, in the final.
- * November 20 – 22: 2015 La Grande Sfida in Modena / Verona
- ** John McEnroe defeated Sergi Bruguera, 6–3 and 6–4, in the final.
- * December 2 – 6: 2015 Champions Tennis at the Royal Albert Hall in London
- ** Fernando González defeated Tim Henman, 1–6, 7–6, and 10–6, in the final.
Premier Mandatory eventsPremier 5 eventsOther tennis events- January 4 – 10: 2015 Hopman Cup in Perth
- * defeated the, 2–1 in matches, to win its first Hopman Cup title.
- February 7 – November 15: 2015 Fed Cup
- * The defeated, 3–2, to win their ninth Fed Cup title.
- March 6 – November 29: 2015 Davis Cup
- * defeated, 3–1, to win their tenth Davis Cup title.
- May 25 – 31: 2015 BNP Paribas World Team Cup in Antalya
- * Men's World Group #1 winners:
- * Men's World Group #2 winners: 2015 World TeamTennis Finals in [Washington, D.C.">2015 World TeamTennis season">2015 World TeamTennis Finals in [Washington, D.C.
- * The Washington Kastles defeated the Austin Aces, 24–18 in extended play, to win their fifth straight King Trophy as WTT champions.
- November 3 – 7: 2015 UNIQLO Wheelchair Doubles Masters in Mission Viejo, California
- * Men's Doubles winners: Stéphane Houdet / Joachim Gérard
- * Women's Doubles winners: Jiske Griffioen / Aniek van Koot
- * Quad Doubles winners: Nicholas Taylor / David Wagner
- December 2 – 6: 2015 NEC Wheelchair Tennis Masters in London
- * Men's Singles winner: Joachim Gérard
- * Women's Singles winner: Jiske Griffioen
- * Quads Singles winner: David Wagner
- December 2 – 20: 2015 International Premier Tennis League season in,,,, and
- * Team Singapore Slammers defeated Team Indian Aces, 26–21, to win their first International Premier Tennis League title.
- December 10 – 12: Brazil Masters Cup in Rio de Janeiro
- * Men's Singles winner: Thiago Monteiro
- * Men's Wheelchair Singles winner: Daniel Rodrigues
- * Women's Singles winner: Gabriela Cé
- * Women's Wheelchair Singles winner: Natalia Mayara
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