This study was aimed to find out: (1) whether there is a significant difference in speaking skill between students taught using Information Gap Activities and those taught using Role Play; and (2) whether Information Gap Activities is more effective than Role Play to teach speaking. The research method used in this research is an experimental research design. This research was conducted at Junior High School 3Karanganyar in 2017/2018 Academic Year. The population of the research is the 8th grade students Junior High School 3 Karanganyar. The samples are class VIII I as the experimental class which consists of 32 students and class VIII A as the control class which consists of 32 students. The research instrument used to collect the data in this study is test. The data were analysed by using t-test formula. The computationof the t-test shows that t observation (to) = 6.6951 is higher than t table (62, 0.05) =1.999.  Therefore,  it  can  be  concluded  that  there  is  a  significant  difference  in speaking skill between the students taught using Information Gap Activities and those taught using Role Play. The mean score of experimental group is 71.37, while the mean  score  of  control  group  is  64.06.  Therefore,  it  can  be  concluded that Information Gap Activities is more effective than Role Play to teach speaking.