Background: As the number of older adults in Thailand continues to increase, along with increased incidence of surgical intervention that causes pain, the quality of pain care in older adults is needed. Nurses are primarily responsible for assessing and managing pain in older adults (Jose Closs, 2008; Prowse, 2007). The use of evidence-based practices (EBPs) improves quality of care and saves healthcare cost. However, in Thailand where empirical study of using EBP related to pain in older adults is limited, research to understand how Thai nurses use EBP acute pain in older adults is needed.Purpose:The purpose of this study is to describe current practices, perceived barriers and perceived facilitators of Thai nurses on using EBP for assessing and managing acute pain in postoperative older adults.Method:A descriptive exploratory survey was conducted in 8 mid and large-size hospitals in Thailand. The Acute Pain EBP Questionnaire (APEBPQ) (Suwanraj, 2009) was distributed to 240 Thai nurses. 236 questionnaires were returned with the response rate of 98.3 percent. Open-ended questions related to barriers and facilitators of using EBPs were coded to identify major themes. MANOVA was performed to explore the differences between years of nursing experience on perceived barriers and facilitatorsResultsThe majority of participants are female (96.8%) with mean age 35.5 years (range=23-54). Thai nurses reported using 51/53 recommendations from EBPG Acute Pain most of the time/always (95%). Using an equianalgesic table (1.80±1.16) and assessing MMSE in older adults with postoperative pain (1.74±1.15) were occasionally used. Research reports published in English was the greatest barriers. Nurses perceived greatest support from a Head ward than other colleagues. Nurses with 11-20 years of nursing experience had higher reported barriers than those with 1-10 years of nursing experience.Practice Implications: This study will provide important information on barriers and facilitators of using EBPs related to pain assessment and pain management in Thailand. The results of the study will be used to develop strategies to promote the use of EBPs acute pain among Thai nurses who provide nursing care for postoperative older adults.