1970 Embassy British Indoor Championships – Men's singles

The 1970 Embassy British Indoor Championships – Men's singles was an event of the 1970 Embassy British Indoor Championships tennis tournament and was played on indoor carpet courts at the Wembley Arena in London in the United Kingdom, between 16 November and 21 November 1970. The draw comprised 32 players of whom eight were seeded. Rod Laver was the reigning singles champion at the British Indoor Championships. First-seeded Laver retained his title by defeating third-seeded Cliff Richey in the final, 6–3, 6–4, 6–4.

Seeds
• # 🇦🇺 Rod Laver (champion)

• # 🇦🇺 Ken Rosewall (semifinals)

• # 🇺🇸 Cliff Richey (final)

• # 🇺🇸 Arthur Ashe (first round)

• # Tom Okker (first round)

• # 🇦🇺 Roy Emerson (second round)

• # 🇺🇸 Stan Smith (second round)

• # 🇷🇴 Ilie Năstase (quarterfinals)