Grounded on the tradition of Contrastive Rhetoric (CR), this paper aimed at contrasting the presence of metadiscourse resources in a book preface of Filipino and English authors. It especially sought to see the similarities and differences of interactive and interactional markers between two cultures. A total of thirty book prefaces on language areas, fifteen in each culture were culled. They were identified, classified, and interpreted based upon the taxonomies by Hyland and Tse (2004) with the interlarding frameworks by Crismore, Markkanen, and Steffensen (1993); Hyland (2007); Quirk, Greenbaum, Leech and Svartvik (1985); and Yagiz and Demir (2015). Results show that a book preface is calibrated by authors from both cultures with a profuse use of interactional MD resources, that is, a book preface has to be more interactional than interactive. The results also put forth that differences in metadiscourse resources reside in the text due to the differing cultures of individualism and self-accolade among the English, and humility and text-economy among Filipino authors. In a nutshell, practical and pedagogical implications are offered in this present study.