New Zealand golfer Lydia Ko will receive the prestigious Mark H McCormack Medal as the world's leading amateur woman player for the second consecutive year.

Aucklander Ko, 15, secured her No.1 spot on the world rankings with victory at the US women's amateur championship in Cleveland. She beat American Jaye Marie Green 3 and 1 in the final on Monday (NZT).

She has held top spot for 68 consecutive weeks and has booked a place in next year's US Open.

"It gets me to places where normal people can't go, and it's a great honour," Ko said.

"After I got the medal last year, I haven't lost the No.1 position since then. It's good to continue it. I'll continue to get more invites to professional events."

Ko has enjoyed a superb year.

In January she became one of the youngest winners of a professional golf title. She won the New South Wales Open on the Australian Ladies Tour aged 14.

She also won the Australian women's amateur crown and was runner-up at the Australian women's stroke play championship.