Looking on the internet deeply has found these results:

proud of is the most popular phrase on the web.

proud about 199,800 results on the web	proud of 1193,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Do Finnish people feel proud about their educational system? What makes you ... Why do people feel so proud about the religion they belong to? Should Indians ... You feel proud about being something. (My country just legalized gay marriages: something for me to be proud about. Or, I'm proud about my family's heirlooms. Not exactly proud about them, but extremely happy. Honesty : I can honestly claim to have been a most honest person in all walks of my life at all points of time. What makes you proud about your culture? Teens from across Los Angeles County share what their proud of about their heritages. << Finally proud to be ...	Felt absurdly... proud of you, actually. You should feel really proud of yourself, Callie. Karen, I am so proud of you. Intendant Pelletier would be proud of his daughter today. Your mother would be so proud of you. I am proud of you, Lauren. I'm proud of you, Ryan. I'm proud of you, Ryan.

proud about

199,800 results on the web

proud of

1193,000,000 results on the web

More popular!

Do Finnish people feel proud about their educational system? What makes you ... Why do people feel so proud about the religion they belong to? Should Indians ...
You feel proud about being something. (My country just legalized gay marriages: something for me to be proud about. Or, I'm proud about my family's heirlooms.
Not exactly proud about them, but extremely happy. Honesty : I can honestly claim to have been a most honest person in all walks of my life at all points of time.
What makes you proud about your culture? Teens from across Los Angeles County share what their proud of about their heritages. << Finally proud to be ...