The 84-year-old Australian entertainer denies sexually harassing four victims, one as young as seven or eight, between 1968 and 1986.
Harris arrived at Southwark Crown Court in central London on Tuesday accompanied by his wife Alwen and daughter Bindi.
Harris was dressed in a dark blue suit and colourful tie.
He emerged from a large silver van and took his wife’s hand as private security personnel surrounded the family.
The family then walked slowly into court.
Harris didn’t comment to a large media contingent.
The trial is expected to take two months and hear from dozens of witnesses.
Harris in mid-January formally pleaded not guilty to 12 counts of indecent assault in the UK against four girls aged between seven and 19.
He is also facing four counts of making indecent photographs of a child in 2012 but is yet to be arraigned on those charges.
Perth-born Harris, who moved to the UK in 1952, was first questioned by police in November, 2012.
He was arrested in March 2013, rearrested in early August and charged three weeks later.
Harris is the most well-known celebrity to be charged under Operation Yewtree, the British police probe established in the wake of the Jimmy Savile sex scandal.