The ceremony which was organised by the British embassy on Friday was attended by Prime Minister Habib Essid and it came exactly a week after a Tunisian student killed 38 tourists - 30 from Britain - at the popular Port el Kantaoui holiday destination.
The bodies of 17 British victims have already been transported home, with the remaining victims set for repatriation in the coming days.
A minute's silence was also held in London on Friday, led by Queen Elizabeth II and Prime Minister David Cameron.
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The Tunisian beach ceremony was attended by the ministers of foreign affairs, tourism, health and youth and sports, flanked by a sizeable police presence.
Some tourists, yet to return home after last week's massacre, laid flowers in the sand as a plaque commemorating the dead was unveiled.
Tunisia announced on Thursday that it had arrested eight people, including a woman, "with direct links" to the gun attack.
