Though pre-school education is not compulsory in Turkey, having foreign language education in kindergarten has been an upward trend lately. Besides, as there has been an increasing demand on language education in kindergartens, a large number of kindergartens have begun to give English language education so as to meet the demand. However, most of the English teachers working in kindergartens have difficulty in finding right instructional materials appropriate for kindergarten students since there is not an official curriculum for such schools developed by the Ministry of Education. The teachers thus usually need to develop their own materials. The fact that portfolios reflect learners' language learning process and involve various products that learners prepared during the process make them suitable for kindergarten students. The aim of this qualitative study is two-fold: (1) to reveal the advantages of using language portfolio in kindergartens and, (2) to put forward suggestions for how to enrich use of language portfolio and instructional materials in these schools as well as effective language learning.