Objectives: Folk medicines in Kizilcihamam has not been investigated in detail so far. Thus, this study aimed to conduct a comprehensive investigation of folk medicine in the Kizilcahamam district. Materials and Methods: Nine scientific field trips were organized to Kizilcahamam between April 2007 and July 2008. Data were obtained by field interviews with local people using open and semi-structured questionnaires. Results were evaluated statistically with the "use-value", "informant consensus factor" and cultural importance index. Results: Sixty-five species (69 taxa) that belong to 58 genera of 31 families were determined to be used as folk medicines. To the best of our knowledge, this is the first study to record four of these species as folk medicines. Plants from Compositae, Lamiaceae and Rosaceae families were used most frequently as folk medicines in Kizilcahamam. Plants in the study area are mainly used for gastrointestinal system problems, respiratory disorders, and urinary tract diseases. Residents from 41% of the villages where the scientific trips were carried out, declared that they are not using or interested in folk medicines. Conclusion: This study highlights once again the gradual reduction of folk medicinal knowledge and the urgent need for folk medicine investigations in all parts of Turkey. Key words: Ankara, folk medicines, ethnobotany, medicinal plants, Kizilcahamam Amac: Kizilcahamam halk ilaclari su ana kadar detayli bir sekilde arastirilmamistir. Bu nedenle, bu calismada Kizilcahamam ilcesinin halk ilaclarinin kapsamli bir sekilde incelenmesi amaclanmistir. Gerec ve Yontemler: 2007 yili Nisan ayi ile 2008 yili Temmuz aylari arasinda Kizilcahamam'a dokuz bilimsel saha gezisi duzenlenmistir. Veriler saha calismalari esnasinda yerel halk ile yapilan acik ve yari yapilandirilmis bir anket kullanilarak elde edilmistir. Sonuclar istatistiksel olarak "kullanim degeri", "bilgilendirici fikir birligi faktoru" ve "kulturel onem endeksi" hesaplanarak degerlendirilmistir. Bulgular: Otuz bir familyadan 58 cinse ait 65 turun (69 takson) halk ilaci olarak kullanildigi belirlenmistir. Bildigimiz kadariyla bu turlerden dordu ilk kez bu calisma ile halk ilaci olarak kayit altina alinmistir. Kizilcahamam'da en cok Compositae, Lamiaceae ve Rosaceae familyalarindan bitkilerin halk ilaci olarak kullanildigi belirlenmistir. Calisma alanindaki bitkiler, agirlikli olarak mide-bagirsak sistemi problemleri, solunum ve idrar yolu hastaliklari icin kullanilmaktadir. Bilimsel gezilerin yapildigi koylerin %41'inde gorusulen kisiler halk ilaclari kullanmadiklarini veya halk ilaclari ile ilgilenmediklerini beyan etmislerdir. Sonuc: Turkiye'nin her bolgesinde halk ilaci bilgisinin giderek azaldigi ve halk ilaci arastirmalarina acil ihtiyac duyuldugu bu calisma ile bir kez daha vurgulanmistir. Anahtar kelimeler: Ankara, halk ilaclari, etnobotani, tibbi bitkiler, Kizilcahamam