Jainal Amambing is a prominent contemporary artist and author hailing from the indigenous Rungus ethnic group on the island of Borneo. His style, often described as naïve art, is marked by childlike simplicity and sincerity. His works portray the everyday life, folklore, and cultural heritage of Sabah's indigenous communities, reflecting his deep concern over the gradual erosion of these traditions in the face of modernisation. Children frequently occupy the heart of his compositions, symbolising innocence, continuity, and hope. Though self-taught, Jainal Amambing's mentor was the renowned illustrator Yusof Gajah, who encouraged him to continue his style in naïve art. They met at a picture-book illustration workshop led by the latter, organized by Dewan Bahasa dan Pustaka.

His art has been showcased in numerous exhibitions, including various exhibitions organized by the Sabah Art Gallery, Kota Kinabalu; "Between Two Territories", National Art Gallery, Kuala Lumpur (2001), "Singapore Biennale: If the World Changed", Singapore (2013), and "Berlin International Literature Festival", Germany (2021). His solos were held at the El Centro Bar/Café, Kota Kinabalu (2017) and G Wonder Khayalan Home Art Gallery, Kudat, Sabah (2022). Apart from being an acclaimed artist, he has also authored children's books, winning multiple accolades, including the Sabah Annual Selection Award, as well as the prestigious Noma Concours Award organised by the Asia-Pacific Cultural Centre (ACCU) for UNESCO, Tokyo, Japan. In 2014, his children's book - "Sansarinaga and the Flying Buffalo" (otherwise known as "The Magic Buffalo") was published in the German language by Baobab Books, Basel, Switzerland.