Abstrak Fitnation Premiere Gym merupakan usaha yang bergerak di bidang jasa layanan fitness center kepada masyarakat yang ingin berolahraga dalam menjaga kebugaran tubuh dan pembentukan tubuh yang ideal. Untuk meningkatkan kualitas manajemen dan pelayanan, perlu adanya sistem informasi yang membantu dalam proses manajemen dan kinerja. Aktivitas bisnis utamanya adalah pendaftaran anggota, sistem pembayaran dan paket program mereka masih menggunakan sistem, database, aplikasi dan teknologi yang belum saling terintegrasi. Pengelolaan data, verifikasi pembayaran, pelaporan dan persetujuan kegiatan masih dilakukan secara manual. Dalam hal ini memiliki banyak resiko seperti kesalahan dalam pencatatan, waktu yang dibutuhkan untuk pendaftaran anggota relatif menjadi lebih lama, dan informasi yang dibutuhkan tidak terintegrasi. Dalam perencanaan strategis IS/TI sangat diperlukan suatu enterprise architecture agar dapat tercapai keselarasan strategi IS/TI dengan strategi bisnis dari organisasi untuk mengatasi permasalahan guna mewujudkan visi, misi, dan tujuan organisasi. Penelitian ini menggunakan metodologi TOGAF ADM dimulai dari preliminary phase, requirement management, architecture vision, business architecture, information system architecture, technology architecture, opportunities and solution, hingga migration planning. Hasil dari penelitian ini, yaitu suatu usulan model TOGAF ADM yang disesuaikan dengan proses dan kebutuhan bisnis dari fitness center dalam merancang Enterprise Architecture untuk perencanaan strategis IS/TI. Kata kunci—Fitnation premiere gym, TOGAF, enterprise, arsitektur, teknologi informasi Abstract Fitnation Premiere Gym is a business that is engaged in fitness center services for people who want to exercise in maintaining body fitness and ideal body formation. To improve the quality of management and service, it is necessary to have an information system that helps in the management process and performance. Their main business activities are member registration, payment systems and program packages. They still use systems, databases, applications and technologies that are not yet integrated with each other. Data management, payment verification, reporting and approval of activities are still done manually. In this case, it has many risks such as errors in recording, the time required for member registration is relatively longer, and the information needed is not integrated. In IS/IT strategic planning, enterprise architecture is needed to align the IS/IT strategy with the organisation's business strategy to overcome problems in order to realize the organisation's vision, mission, and goals. This study uses the TOGAF ADM methodology starting from the preliminary phase, requirements management, architecture vision, business architecture, information system architecture, technology architecture, opportunities and solutions, to migration planning. The results of this study, namely a proposed TOGAF ADM model that is tailored to the processes and business needs of the fitness centre in designing Enterprise Architecture for IS/IT strategic planning.Keywords—Fitnation premiere gym, TOGAF, enterprise, architecture, information technology