Professor Haymet delivered the keynote address at the award ceremony for the 2026 Marie Krogh Young Women in Science Prize.

In June 2026, the Chief Scientist addressed the Indonesia–Australia Leaders Dialogue on Science, Technology and Innovation.

On 8 July 2026, the Chief Scientist addressed the national conference of the Australian Science Teachers Association.

On 15 July 2026, Prof Tony Haymet delivered a speech at the Korea-Australia Future Forum in Seoul, Republic of Korea.

On Monday 22 June, Prof Tony Haymet delivered the opening address at the Australian Science Olympiads Team announcement in Canberra.

Prof Tony Haymet attended the Oceans of Data conference in Perth, where he delivered a keynote address on 25 May 2026.

On Friday 22 May 2026, Prof Tony Haymet delivered the closing keynote address at Collaborate Innovate 2026 in Perth.

On 15 May 2026, Prof Tony Haymet delivered the opening remarks for the 9th Malaspina Awards ceremony and later presented the Individual Award to Dr Josep 'Pep' Canadell.

On 13 May 2026, Professor Haymet delivered a pre-recorded video address to the Maritime Decarbonisation Summit.

On Tuesday 21 April, Australia’s Chief Scientist Prof Tony Haymet delivered a pre-recorded address for the launch of the Australian Research Council Hub for PV Solar Panel Recycling and Sustainability.