1970 Rothmans Canadian Open
Date	August 12–18 (men) August 19–25 (women)
Edition	81st
Surface	Clay / outdoor
Location	Toronto, Ontario, Canada
Venue	Toronto Cricket Skating and Curling Club
Champions
Men's singles
Rod Laver[1]
Women's singles
Margaret Court
Men's doubles
William Bowrey / Marty Riessen[2]
Women's doubles
Rosemary Casals / Margaret Court
← 1969 · Canadian Open · 1971 →

The 1970 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Cricket Skating and Curling Club^[3] in Toronto in Canada that was part of the 1970 Pepsi-Cola Grand Prix. The men's tournament was held from August 12 through August 18, 1970, while the women's tournament was played from August 19 through August 25, 1970.

Finals

Men's singles

Rod Laver defeated Roger Taylor 6–0, 4–6, 6–3

• It was Laver's 6th professional title of the year and the 17th of his career.

Women's singles

Margaret Court defeated Rosemary Casals 6–8, 6–4, 6–4

• It was Court's 27th professional title of the year and the 77th of her career.

Men's doubles

William Bowrey / Marty Riessen defeated Cliff Drysdale / Fred Stolle 6–3, 6–2

• It was Bowrey's 2nd title of the year and the 4th of his career. It was Riessen's 3rd title of the year and the 8th of his professional career.

Women's doubles

Rosemary Casals / Margaret Court defeated Helen Gourlay / Pat Walkden 6–0, 6–1

• It was Casals' 6th title of the year and the 13th of her career. It was Court's 28th professional title of the year and the 78th of her career.