AbstrakPerpustakaan merupakan sumber ilmu dan pusat informasi yang sangat penting bagi perkembangan dunia pendidikan. Perpustakaan Umum Kabupaten Pati merupakan perpustakaan umum satu-satunya di Kabupaten Pati. Penataan ruang Perpustakaan Umum Kabupaten Pati, belum sepenuhnya memperhatikan prinsip penataan ruang perpustakaan, sehingga kedepanya perlu ditingkatkan. Penelitian ini dilakukan dengan metode deskriptif dengan tujuan menganalisa zonasi ruang Perpustakaan Umum Kabupaten Pati, serta menganalisa tata letak ruang perpustakaan Umum Kabupaten Pati, berdasarkan prinsip penataan ruang perpustakaan menurut Lasa Hs (2007 : 202) dan menganalisa besaran perabot berdasarkan neufert. Hasil penelitian menyatakan bahwa terdapat empat kategori zonasi, berupa area buku, area pelayanan, area baca, dan area pendukung lain. Menurut hasil observasi yang dilakukan di Perpustakaan Umum Kabupaten Pati, mengenai kondisi Sarana dan prasarana Perpustakaan Kabupaten Pati, serta penataan ruangnya, Sebagaian besar sudah memenuhi prinsip penataan ruang yang baik, tetapi sebagian masih ada yang perlu untuk diperbaiki maupun ditingkakan untuk memenuhi kebutuhan pustakawan dan pemustaka. Penataan ruang yang sudah baik diantaranya yaitu, ruang yang memerlukan konsentrasi sudah dipisah, ruang yang bersifat pelayanan umum sudah ditempatkan di lokasi setrategis, perabot perpus sudah disusun dalam garis lurus dan lebar koridor sudah sesuai standar, namun diantara itu masih ada yang perlu diperbaiki atauppun ditigkatkan, yaitu besaran perabot sebagian belum sesuai standar neufert, jarak sirkulasi antar rak buku masih sempit belum sesuai standar, dan penempatan ruang dengan tugas yang hampir sama sebagian belum ditempatkan secara berdekatan.Kata Kunci: Penataan, Perpustakaan, Tata Letak AbstractThe library is a source of knowledge and information center which is very important for the development of education. Pati Regency Public Library is the only public library in Pati Regency. The spatial arrangement of the Pati Regency Public Library has not fully paid attention to the principles of library spatial planning, so that in the future it needs to be improved. This research was conducted using a descriptive method with the aim of analyzing the spatial zoning of the Pati Regency Public Library, as well as analyzing the room layout of the Pati Regency Public Library, based on the principles of library spatial arrangement according to Lasa Hs (2007: 202) and analyzing the amount of furniture based on neufert. The results of the study stated that there were four zoning categories, namely the book area, service area, reading area, and other supporting areas. According to the results of observations made at the Pati Regency Public Library, regarding the condition of the Pati Regency Library facilities and infrastructure, as well as their spatial planning, most of them have fulfilled the principles of good spatial planning, but some still need to be repaired or increased to meet the needs of librarians and users. . Spatial planning that is already good includes rooms that require concentration that have been separated, spaces that are public services have been placed in strategic locations, library furniture has been arranged in straight lines and the width of the corridors is up to standard, but among them there are still things that need to be repaired or increased , namely the amount of furniture is partly not according to the Neufert standard, the circulation distance between the bookshelves is still narrow, not according to the standard, and the placement of rooms with almost the same tasks, some of them have not been placed close together.Keywords: Layout, Libraries, Structuring