Looking on the internet deeply has found these results:

may i know you? is the most popular phrase on the web.

do i know you? 1305,000 results on the web	may i know you? 115,400,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
04 Do I Know You? (22 Sep. 2008). TV Episode \| TV 12. Jump up ^ Michelle Zoromski (2008 Jul 2, 2012 ... My question is about similar (for me) question forms "don't I know you" and "do I know you". Is there any difference between them or can they�... 21). "How I Met Your Mother: �... 09 Mar 30, 2015 ... 'Do I Know You?' (On Forgetting Lovers). The School of Life. Subscribe SubscribedUnsubscribe 225,646. Subscription preferences. Loading. "How I Met Your Mother "Do I Know You"". The AV Club. The Onion. Retrieved 2010	May I know your name please? May I know your good name? May I let you know tomorrow? Miss, may I know whom you are visiting? May I know your name, sir? may i know you? May I know what you doing please? May I know what surgery you had?

do i know you?

1305,000 results on the web

may i know you?

115,400,000 results on the web

More popular!

04
Do I Know You? (22 Sep. 2008). TV Episode | TV
12. Jump up ^ Michelle Zoromski (2008
Jul 2, 2012 ... My question is about similar (for me) question forms "don't I know you" and "do I know you". Is there any difference between them or can they�...
21). "How I Met Your Mother: �...
09
Mar 30, 2015 ... 'Do I Know You?' (On Forgetting Lovers). The School of Life. Subscribe SubscribedUnsubscribe 225,646. Subscription preferences. Loading.
"How I Met Your Mother "Do I Know You"". The AV Club. The Onion. Retrieved 2010