In recent years, molecular ferroelectrics have received great attention due to their low weight, mechanical flexibility, easy preparation and excellent ferroelectric properties. Among them, crown‐ether‐based molecular ferroelectrics, which are typically composed of the host crown ethers, the guest cations anchored in the crown ethers, and the counterions, are of great interest because of the host‐guest structure. Such a structure allows the components to occur order‐disorder transition easily, which is beneficial for inducing ferroelectric phase transition. Herein, we summarized the research progress of crown ether host‐guest molecular ferroelectrics, focusing on their crystal structure, phase transition, ferroelectric‐related properties. In view of the small spontaneous polarization and uniaxial nature, we outlook the chemical design strategies for obtaining high‐performance crown‐ether‐based molecular ferroelectrics. This minireview will be of guiding significance for the future exploration of crown ether host‐guest molecular ferroelectrics. Crown‐ether‐based molecular ferroelectrics are attractive for the host‐guest structure, where the guest cation is anchored in the host crown ether and the anion acts as the counterion. Their crystal structure, phase transition and ferroelectric properties are discussed in this minireview. Additionally, an outlook on the chemical design of high‐performance crown ether host‐guest molecular ferroelectrics is given.