Introduction: Adequate nutritional status of pregnant mothers is essential for their health and pregnancy outcomes. Especially during pregnancy, the regular three meals and at least one extra meal (snack) per day is recommended. But only limited research has been conducted on Extra meal consumption and its factor in Ethiopia. Objective: To assess Extra meal consumption and associated factors among pregnant women attending Antenatal care at Guna Health Center south Gondar zone, Northwest Ethiopia. Method: Institutional based cross-sectional study on 334 subjects was conducted at Guna Health Center south Gonder zone, Northwest Ethiopia, From February 7-27/2019 and simple random sampling was employed. Data were entered in to Epi Info version 7 and analyzed using SPSS version 20 statistical software. Both descriptive and analytical statistics were used. Variables with p value less than 0.2 in bivariate analysis were entered in to multivariate logistic regression model. Variables P value less than 0.05 were taken as statistically significant and adjusted odds ratio with 95% CI was considered to see association. Result: A total of 334 pregnant women were interviewed for this study with the response rate of 100%. Higher proportion 280(83.8%) with 95% CI of (80-88%) of the study participants do not take extra meal during their pregnancy time. family size, nutrition information and number of ANC visit became independent predictor for extra meal consumption. A pregnant women with household family size >4 persons was 81%less likely extra meal consume during pregnancy compared to their counterpart with household family size <=4 persons (AOR=0.191 at 95% CI (0.020-0.727).Relative to women who was visited ANC greater than three times during current pregnancy these who visited only once was 90.6% times less likely extra meal consume during pregnancy (AOR= 0.094 at 95%CI 0.020,0.434).Conclusion and recommendation: women found in the study area were suffered from poor dietary practice due to not having extra meal during pregnancy. According to the study result factors affecting extra meal consumption were family size, nutrition information and number of ANC visit. Thus, woreda health office should consider identified factors in their plan to reduce this problem by awareness creation of pregnant mothers. As well, it is recommended for further assessments