Lam Siong Onn, based in Kuching, is a veteran artist known for his semi-abstract watercolors that capture light and vibrant geometric compositions. Mentored by the Sarawakian art pioneer - Tsai Horng Chung, Lam honed his skills through plein-air studies and won drawing competitions. Influenced by modern artists like Paul Klee and Mark Rothko, Lam has exhibited internationally since 1970 and won awards such as the Winsor & Newton worldwide painting competition (2000), Sarawak State-Wide Art Award (1988), the China Jiangsu Watercolour Research Institute Honour Medal (2007), the First Sarawak Generation Fine Art Artist Award (2008), and the Malaysian National Art Gallery's ‘Salut 55’ Honorary Award (2013).

Since 1970, Lam has participated in numerous exhibitions nationally and internationally across Malaysia, Singapore, Thailand, Indonesia, Taiwan, Hong Kong, mainland China, Korea, Japan, Australia, Sweden, Belgium, England, and the United States. His solo shows were hosted by the Affinity ART Gallery in Hong Kong in 2013 and 2015. His works are collected by the National Art Gallery Malaysia, Bank Negara, Galeri Petronas, Shell Company, Sarawak Museum, and the Sarawak State Library. He is one of the founding members of the Sarawak Artists Society (SAS) and a member of the Japan Modern Fine Arts Association in Osaka.