Use of flagellins from the genus Marinobacter as vaccine adjuvants. This invention is based on the use of two recombinant flagellins, F and FR, from the species Marinobacter algicola (DG893T strain), as vaccine adjuvants capable of developing a specific immune response, against peptides or proteins fused to said flagellins, or administered unfused jointly with the flagellins. This invention also describes new combined vaccination strategies, based on the two Marinobacter algicola flagellins and the Salmonella typhimurium flagellin.