Satanas sa Lupa (“Satan on Earth”), subtitled “nobelang pangkasalukuyan” (“Present-day Novel”), is a 1970 Tagalog-language novel by Filipino author and scriptwriter Celso Al. Carunungan, one of the “titans of Philippine literature”. The novel criticizes the Philippine government and society during the early part of the 1970s, a reason why the author had been included among the group known as "Class 1081", Filipinos imprisoned when Martial Law was declared by Ferdinand Marcos in 1972.