New concepts of -statistical convergence for double sequences of order α̃ and strong -Cesàro summability for double sequences of order α̃ are introduced for sequences of (complex or real) numbers. Furthermore, we give the relationship between the spaces , and . Then we express the properties of strong -Cesàro summability of order β̃ which is related to strong -Cesàro summability of order α̃. Also, some relations between -statistical convergence of order α̃ and strong -Cesàro summability of order α̃ are given.