Water electrolysis is one of the most efficient approaches to producing hydrogen using clean renewable energy. Two major types of water electrolysis, alkaline water electrolysis (AWE) and proton exchange membrane water electrolysis (PEMWE), have already been put to practical use. However, AWE has disadvantages in relatively low purity of the produced hydrogen. The drawback of PEMWE is its highly acidic environment, which requires the usage of noble metal catalysts. In contrast, anion exchange membrane water electrolysis (AEMWE) is currently paying attention as an alternative because it can produce highly pure hydrogen using cheaper non-noble metal-based catalysts [1]. However, it was reported that the current density of AEMWE in operation is lower than that of PEMWE. The reasons for the low performance of AEMWE are low anion conductivity and insufficient alkaline stability of anion conductive polymers used as Anion Exchange Membranes (AEMs) and Ionomers (AEIs). Therefore, anion conductive polymers are required to maintain high anion conductivity without degradation in strongly alkaline environments. Here, we show the electrolyte characteristics and water electrolysis performance of poly(fluorene) anion conductive polymers (TMA-PFx) as AEMs and AEIs for AEMWE.