Previous research has shown that people with aphasia often exhibit impairments in pronoun processing (e.g., Choy & Thompson, 2010; Grodzinsky et al., 1993). As pronouns are an essential part of languages and, therefore, of daily communication, identifying the underlying nature of processing impairments of pronominal forms is essential. A recent meta-analysis (Arslan et al., 2021) has demonstrated that the majority of studies on pronoun processing in aphasia investigate only some of the many different pronoun types (i.e., personal pronouns, interrogatives and reflexives) while studies on other pronoun types such as demonstratives or possessives are mostly lacking. To tackle this research gap, this study focuses on processing of possessives, an understudied pronoun type, in German speakers with aphasia. Studies on English have shown that, in people with aphasia, the ability to comprehend possessives tends to be preserved, while the production of possessives can be impaired (Caplan et al., 2007; Goodglass et al., 1993). However, this may not hold for comprehension of German possessives, which are morphologically more complex than English possessives. Possessives can be used both as determiners (PossDet; e.g., ‘That is her car’) and as pronouns (PossPro; e.g., ‘That is hers’). In German, both possessive forms are morphologically complex: They are marked for features of the possessor (i.e., the person possessing something) as well as features of the possessee (i.e., the object being possessed). For third person singular forms, possessor marking requires marking of number and gender on the stem (sein- ‘his’ and ihr- ‘her’). Number, case, and gender (masculine, feminine and neuter) are marked on the suffix for possessee agreement.