Actually, it's "Barry." He went through a period of time in high school when he wanted an American-sounding name, so he changed Barack into a shortened version and it became his nickname-- "Barry." But he stopped using it in college and went back to his real name, Barack.
Mrs. Obama calls the President "Barack." His birth family called him "Barry."
Barack Obama had two grandmothers-- the one who helped to raise him in Hawaii, and with whom he was very close, was his maternal grandmother, Madelyn Dunham. (His nickname for her was "Toot," short for the Hawaiian word for "grandma.") His paternal grandmother lived in Africa; her name was Habiba Akumu Obama.
I am not sure which nickname you are asking about. When he was younger, President Obama shortened his birth name of Barack and turned it into "Barry." But eventually, when he was in college, he decided to embrace his name and he has not used "Barry" since that time. It has not been reported that he has another nickname, although some of his friends jokingly call him "No Drama Obama" because he is known for having a basically calm personality and not getting involved in lots of emotion and drama.
921 OBAMA
George Bush Barack Obama Now that is what I call a balanced answer
In a letter, he would be referred to as President Obama or Mr. President
Barack obama
Barack Obama
Call Me Maybe - Carly Rae Jepsen
After the Barack Obama is sworn in as President, Michelle Obama will officially become the First Lady of the United States of America.
The era of too much taxesOR, government by grown-ups (Obama has actually reduced taxes)
FLOTUS - first lady of the united states