Are Haley Joel Osment and Emily Osment related?

They are indeed!

Brotha and sista:P

yes they are

yeah theyre brother and sister.

yupyup

yes haley and emily are brother and sister and actually I actually met him in new york and I asked for his autograph and he was sooo sweet and asked me to lunch its a true story

Emily Jordan Osment (born March 10, 1992 in Los Angeles, California) is an American actress, singer and spokesmodel, most famous for her roles of Gerti Giggles in the Spy Kids trilogy and Lilly Truscott in Hannah Montana.

Born in Los Angeles, California[1] where her family still resides, to actor Eugene Osment and Theresa Osment (née Seifert), a teacher.[2][3] Osment has never been a stranger to the world of entertainment and acting. Her father, Eugene Osment, is an actor of various films, and her older brother is famous Academy Award-nominated actor Haley Joel Osment

yes they are

I think they are because if you look at them they look just alike. I was wathin hannah montana one and sixith sense and I flip back and forth like I dont know how many times to see if they lookd alike and ofcors they lookd alike:p