Social media is one source of information that can be obtained by organizations / vendors or consumers. One of the information obtained from social media is the opinion of social media users on a matter. These opinions can be positive, negative or neutral. Sentiment analysis can be used to assess the sentiments of the opinions expressed by social media users. Sentiment analysis method used is a machine learning algorithm that can help the classification process. In this study the comparison of the accuracy of opinion sentiment analysis on the recommendation of favorite souvenirs in the Yogyakarta area using the Lexicon Based method and Support Vector Machine. The processed data is Twitter and Instagram social media sentiment data. The training data used were 1000 sentiment data, while the test data for the testing process were 50 sentiment data. The test results obtained the greatest accuracy is using a Lexicon Based 87.78%, then the greatest precision results are using a Lexicon Based of 94.23%, while for the greatest recall results are using a Support Vector Machine of 100%.