This article suggests two generalized classes of estimators of population mean using auxiliary information in stratified random sampling. The properties of the suggested classes are derived and asymptotic optimum estimator in each class is identified with its properties. The large numbers of known estimators are members of the suggested classes such as usual unbiased estimator, usual combined ratio estimator (Hansen et al., Am Stat Assoc 41:173–189, <CitationRef CitationID="CR5">1946</CitationRef>), usual combined product estimator (Kaur, Biom J 27(1):101–105, <CitationRef CitationID="CR14">1985</CitationRef>), and estimators /classes of estimators due to Kaur (Biom J 26(7):749–753, <CitationRef CitationID="CR13">1984</CitationRef>, Biom J 27(1):101–105, <CitationRef CitationID="CR14">1985</CitationRef>), Diana (Statistica 53(1):59–66, <CitationRef CitationID="CR2">1993</CitationRef>), Kadilar and Cingi (Biom J 45(2):218–225, <CitationRef CitationID="CR9">2003</CitationRef>, Commun Stat Theory Methods 34(3):597–602, <CitationRef CitationID="CR11">2005</CitationRef>), Shabbir and Gupta (Am J Math Manag Sci 25(3–4):293–311, <CitationRef CitationID="CR19">2005</CitationRef>), Singh and Vishwakarma (Metodologia de Encuestas, Monografico: Incidencias en el trabjo de Campo 7(1):32–40, <CitationRef CitationID="CR30">2006a</CitationRef>, Stat Trans 7(6):1311–1325, <CitationRef CitationID="CR31">2006b</CitationRef>), Singh et al. (Stat Pap 49(1):37–58, <CitationRef CitationID="CR34">2008</CitationRef>, SORT 34(2):157–180, <CitationRef CitationID="CR35">2010</CitationRef>), Tailor (Data Sci Jour 8:182–189, <CitationRef CitationID="CR45">2009</CitationRef>), Koyuncu and Kadilar (J Stat Plan Inference 139(8):2552–2558, <CitationRef CitationID="CR15">2009</CitationRef>, Pak J Stat 26(2):427–443, <CitationRef CitationID="CR17">2010b</CitationRef>) and Tailor et al. (Commun Korea Stat Soc 18(1):111–118, <CitationRef CitationID="CR46">2011</CitationRef>). The theoretical and empirical studies are carried out and findings are encouraging and support the soundness of the present study. Copyright Springer-Verlag Berlin Heidelberg 2015
