Title Contact 3-structure QR-warped product submanifold in Sasakian space form Type of Research Article Keywords Warped product, contact QR-warped product, Sasakian space form Abstract Abstract: In the present paper we obtain sharp estimates for the squared norm of the second fundamental form in terms of the mapping function for contact 3-structure CR-warped products isometrically immersed in Sasakian space form. Researchers Esmaiel Abedi (First Researcher)، Ghorbanali Haghighatdoost Bonab (Second Researcher)، Mohammad Ilmakchi (Third Researcher)، Zahra Nazari (Fourth Researcher)