Alper Gencer, a doctor, director, screenwriter and poet, is one of the prominent figures of modern Turkish poetry in recent years with his unique style, sensibility and power of expression. The poet has preferred a poetic language in which the associative relations between words are intense and has adopted a form of expression that goes beyond the known and the conventional. When Gencer’s poems are analyzed, it is seen that he occasionally resorts to language deviations in order to strengthen or reinforce the expression in accordance with the existence and nature of poetry itself. In this way, he wrote poems in which the possibilities of the use of language were expanded with his original imagination and in which the form of expression was emphasized rather than the theme. In doing so, it has been observed that he constructs the language of poetry sometimes through the derivation of new words that have not been heard before, sometimes through the use of spelling and punctuation rules, and sometimes through unconventional correspondences. In this study, it is aimed to try to understand and convey Gencer’s poetic language through the language deviations he uses. Ah!, a collection of poems written between 2001 and 2011, and Şarkısızın Şarkısı, a collection of poems written between 2012 and 2017, were chosen as the sample for the study. These deviations are analyzed under the subheadings of lexical deviations, orthographic deviations, phonological deviations, grammatical deviations, semantic deviations, historical deviations, interference with borrowed texts and dialectal deviations.