Philadelphus is the scientific name of mock-oranges, a genus of shrubs.
Philadelphus is the Latinized form of the ancient Greek Philadelphos (, meaning "brother-loving" or "sibling-loving"), it may also refer to:
People: Ptolemy II Philadelphus (309–246 BC), king of Ptolemaic Egypt 283 BC-246 BC Arsinoe II, given the epithet "Philadelphoi" (plural form) after marrying her brother Ptolemy II Philadelphus Mithridates IV Philopator Philadelphus (before 179- c.150 BC), king of Pontus c.155 –c.150 BC Attalus II Philadelphus (220–138 BC), king of Pergamon 160- 138 BC Laodice VII Thea Philadelphus (after 122 to after 86 BC), princess of the Seleucid Empire and later queen of Commagene Antiochus XI Ephiphanes Philadelphus (d. 92 BC), king of the Seleucid Empire 95-92 BC Philip I Philadelphus, king of the Seleucid Empire 95 BC-84/83 BC Ptolemy XII Auletes (Philopator Philadelphos), Ptolemaic king: r. 80 to 58 BC and 55 BC to 51 BC. Ptolemy Philadelphus (son of Cleopatra) (36-29 BC), prince of Ptolemaic Egypt 36 BC-30 BC, son of Mark Antony
Deiotarus Philadelphus (died c.6 AD), last king of Paphlagonia before 31 BC-c.6AD Iotape Philadelphus (before 17- c. 52 AD), princess and later queen of Commagene
Philadelphus of Byzantium, bishop of Byzantium 211-217 AD
Philadelphus Philadelphia, stage name of Jacob Philadelphia, 1735-1795 CE
Philadelphos/Philadelphus, Christian martyrs commemorated in the Eastern Orthodox liturgical calendar on February 8, May 10 and September 2
Other uses: Philadelphus Jeyes, the chain of pharmacies operated by the inventors of Jeyes Fluid Philadelphus, North Carolina, a Registered Historic Place in Robeson County, North Carolina
See also Philadelphia (disambiguation) Phyladelphus, a genus of the fly family, Chloropidae Philometor (disambiguation), "mother-loving" Philopator (disambiguation), "father-loving" Eupator (disambiguation), "of noble father"