NOVELTY - Co-production of an alkylbenzene product (12) and a biofuel (13) from natural oil (14), comprises deoxygenating the natural oil to form paraffins (20), hydrocracking a first portion (23) of the paraffins to form a first stream of normal or lightly branched 9-14C paraffins and a second stream of isoparaffins, dehydrogenating the first stream to provide mono-olefins, alkylating benzene with the mono-olefins to provide effluent, isolating the alkylbenzenes to provide the alkylbenzene product, and processing a second portion of the paraffins and the second stream of isoparaffins to form biofuel.    USE - The method is useful for co-production of an alkylbenzene product and a biofuel from natural oil or natural oil source of triglycerides (all claimed), where the alkylbenzene product is useful as intermediates in the production of surfactants for detergents and the biofuel, which is useful in transportation applications.    ADVANTAGE - The method allows simple and rapid production of the renewable alkylbenzene product and biofuel with high biodegradability in an economical manner.    DETAILED DESCRIPTION - Co-production of an alkylbenzene product (12) and a biofuel (13) from natural oil (14), comprises (a) deoxygenating the natural oil to form paraffins (20), (b) hydrocracking a first portion (23) of the paraffins to form a first stream of normal or lightly branched 9-14C paraffins and a second stream of isoparaffins, (c) dehydrogenating the first stream to provide mono-olefins, (d) alkylating benzene with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene, (e) isolating the alkylbenzenes to provide the alkylbenzene product, and (f) processing a second portion of the paraffins and the second stream of isoparaffins to form biofuel.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a system for co-production of alkylbenzene product and biofuel from natural oil.    Alkylbenzene product (12)    Biofuel (13)    Natural oil (14)    Paraffins (20)    First portion. (23)