Although most of the novels of the Spanish writer Javier Marías have been translated intoour language, there are very limited studies on the author's works in the national literatureThis study aims to contribute to the literature by analyzing the metactional structure,which is one of the main ction elements of postmodern writing in J. Marías' All Souls(Todas Almas) (1989) and The Dark Side of Time (Negra Espalda del Tiempo) (1998).Although there is no consensus yet, it is seen that the metaction is generally dened as action that reects its ctionalism in ction. It is believed that the rst concrete example ofthe metaction dates back to the writer M. De Cervantes' seventeenth century novel DonQuijote (1605). The metaction writers intervene to comment on the ctional universe ofwriting, being created by rejecting the main elements of traditional novel such as plot andtime-space. Furthermore, they try to build a multi-layered ctional world by blurring thedistinction between ction and reality in the narrative text. In this context, the mostimportant feature of J. Marías' novels mentioned above is the author's comments about thectional world for the purpose of guiding the reader about the ctional writing. J. Marías,who deliberately blurs the boundaries between the concrete life and the ctional world,appears to turn himself into a ctional character as a writer within the ctional narrative.It is aimed with this study to reveal metactional aspects in two novels above mentioned ofJ. Marías.