Sidr

Sidr or SIDR may refer to:
 * Cyclone Sidr, a very severe cyclonic storm in the Bay of Bengal in 2007
 * As Sidr, Saudi Arabia
 * Sidra, Libya
 * Sidrat al-Muntaha, a tree mentioned in the Quran
 * Sidre, a self-help group for Bedouin in Israel
 * Ziziphus lotus, a bush
 * Ziziphus zizyphus (Jujube), a tree
 * "Secure Inter-Domain Routing" (in computer networking)