7:
European Journal of Operational Research

5:
Discrete Applied Mathematics

4:
Annals of Operations Research
Operations Research Letters

3:
Computers and Operations Research
INFORMS Journal on Computing
Journal of the Operational Research Society
Naval Research Logistics

2:
Interfaces
International Journal of Flexible Manufacturing Systems
Journal of Combinatorial Optimization
Journal of Scheduling
Mathematics of Operations Research
Networks
Operations Research
Statistica Neerlandica
4OR

1:
Belgian Journal of Operations Research, Statistics, and Computer Science
Central European Journal for Operations Research and Economics
Computational Economics
Discrete Optimization
IEEE Transactions on Computers
International Journal of Production Economics
Journal of Algorithms
Journal of Sports Economics
Mathematical Programming
Mathematical Social Sciences
Optimization Letters
OR Spektrum
RAIRO-Operations Research
SIAM Journal on Discrete Mathematics
Tijdschrift voor Economie en Management