The '''Life-Giving Spring''' or '''Life-Giving Font''' of the [[Theotokos|Mother of God]] (in Greek: Ζωοδόχος Πηγή; Russian: живоносного источника) is both the [[feast day]] of [[w:Church of St. Mary of the Spring (Istanbul)|a historic church]] just west of Constantinople in [[w:Balıklı, Istanbul|Valoukli]], and an icon of the [[Theotokos]].

The [[feast day]] of the Life-Giving Spring is commemorated on [[w:Easter Friday|Bright Friday]] of each year (the Friday following [[Pascha]]), being the only feast day which may be celebrated during [[Bright Week]]. The , while the commemoration of the Life-Giving Spring ''[[Icon]]'' of the Most Holy [[Theotokos]] is commemorated by the [[Orthodox Church]] observed on [[April 4]].

In Orthodox hymnography, the ''Theotokos'' is frequently compared with a ''Holy Fountain''. The hymns and prayers of the feast are combined with the Paschal hymns, and there is often a Lesser [[Holy water|Blessing of Waters]] performed after the [[Divine Liturgy]] on [[w:Easter Friday|Bright Friday]]. In old [[Church of Russia|Russia]], continuing Greek traditions, there was a custom to sanctify springs that were located near churches, dedicate them to the [[Theotokos|Holy Mother]], and paint icons of her under the name title ''The Life Giving Spring''.<ref>Kristina Kondratieva (Global Art Communications project). ''[http://www.iconkuznetsov.com/index.php?sid=341&did=264&lang=eng Panagia The Life Giving Spring].'' Yuriy Kuznetsov: Icons of the XXI Century. Accessed: 2011-05-19.</ref>