AbstractThis study aimed to find out about the effect of halal certificate, product quality, and price on sales increase in Aqiqah Catering Nurul Hayat Yogyakarta.This was a field research which used quantitative approach. The population was all the consumers and producers of Aqiqah Catering Nurul Hayat Yogyakarta. The sample was selected using sample random sampling with a total of 150 respondents. The method used in this study was quantitative with multiple linear regressions. The findings showed that the variables of halal certificate, product quality, and price have a significant effect on sales increase. This is evident from the Fcount of 8.151 > Ftable of 2.67 with a significance of 0.000 (> 0.05). Therefore, H0 was rejected and H1 was accepted, meaning that there is a simultaneous effect of the variables of halal certificate, product quality, and price have a significant effect on sales increase in Aqiqah Catering Nurul Hayat Yogyakarta. In addition, the variables of halal certificate, product quality, and price have a significant effect on sales increase of 12.6%, evident from the R2 of 0.126, while the remaining 87.4% is affected by other variables not discussed in this model. Keywords: Halal Certificate, Price, Product Quality, Sales Increase