Background and context: Chronic hepatitis B (CHB) is a major public health issue in Australia, affecting an estimated 238,000 people. If not appropriately managed, chronic hepatitis B infection can cause cirrhosis and liver cancer. Liver cancer has the fastest increasing incidence rate of all cancers in Australia, and its survival is among the lowest. To reduce the burden of liver cancer, more people with CHB need to be diagnosed and treated. The majority of people living in Australia with CHB (61%) were born overseas, and research indicates people have low levels of understanding about hepatitis B, and its link to liver cancer. Cancer Council Victoria developed several communication campaigns to increase testing and diagnosis for hepatitis B in the Vietnamese and south Sudanese communities living in Victoria. Aim: •To raise awareness about hepatitis B and the link to liver cancer in the Vietnamese and south Sudanese community •To increase understanding about diagnosis, vaccination and management •To mobilize the community to talk to their trusted GP about hepatitis and to be tested. Strategy/Tactics: The campaign strategy was designed to address the knowledge barriers to testing for these two communities. To inform the strategy, qualitative focus groups and community interviews were used to identify perceptions of hepatitis B and liver cancer, as well as the barriers and motivators to testing. Both communities identified their local doctor as a trusted source of health information. Two media campaigns were developed featuring a known doctor from each community. An additional campaign was tailored specifically for young south Sudanese people using hip hop music as method of disseminating key messages about liver cancer prevention. Program/Policy process: The campaigns were designed by the Screening, Early Detection and Immunization Team at Cancer in Council Victoria, Australia. Outcomes: Digital metrics and face to face interviews with community members, nurses and doctors were used to assess the impact of the campaigns. Evaluation results also indicated people did visit their doctor to talk about hepatitis B. The success in motivating people to see their doctor was attributed to the campaigns featuring a message about liver cancer being caused by hepatitis B, and it being led by a known and respected doctor from their own community. What was learned: Cancer organizations can target liver cancer prevention efforts to · increase awareness about liver cancer and hepatitis B in at risk communities; · motivate at risk people to visit their doctor for hepatitis B testing, vaccination and treatment by linking the prevention of liver cancer to hepatitis treatment; · tailor communications to the specific needs of different culturally diverse communities; · collaborate closely with communities from culturally diverse backgrounds to ensure campaign messages and calls to action are culturally appropriate.