Ionescu (Francisized as Ionesco or Jonesco) is a Romanian surname, derived from the male given name Ion. It may refer to:
Adrian Silvan Ionescu, historian and art critic
Alexandru Ionescu, bobsledder
Alexandru Ionescu, socialist militant
Cazimir Ionescu, politician
Claudiu Eugen Ionescu, handball player
Constantin Al. Ionescu-Caion, journalist
Constantin Dudu Ionescu, politician
Constantin Ionescu Gulian, philosopher and journalist
Cristian Ionescu, politician
Elisabeta Ionescu, handball player
Emanoil Ionescu, soldier
Eugen Ionescu, also Eugène Ionesco, absurdist playwright
Gelu Ionescu, literary historian and critic
George Ionescu-Gion, journalist and historian
Gheorghe Ionescu, painter
Gheorghe Ionescu-Sisești, agronomer
Ghiţă Ionescu, political scientist
Grigore Ionescu, architect and historian
Ilarion Ionescu-Galați, violinist and conductor
Ioan Ionescu-Dolj, jurist
Ion Ionescu de la Brad, agronomist and economist
Jojo (Cătălina Alexandra Ionescu), pop singer
Marian Ionescu, pioneer cardiac surgeon
Marian Ionescu, pop drummer
Mircea Ionescu Quintus, politician
Nae Ionescu, philosopher
Nicolae Ionescu, politician
Nicolae Ionescu-Pallas, physicist
Nicolae Ionescu-Siseşti, neurologist
Radu Ionescu, literary critic and poet
Raicu Ionescu-Rion, socialist journalist, sociologist and art critic
Șerban Ionescu, actor
Silvan Ionescu, visual artist
Silviu Ionescu, former Chargé d'Affaires of the Romanian Embassy in Singapore
Ştefan Ionescu Valbudea, sculptor
Take Ionescu, politician
Theodor V. Ionescu, physicist
Thoma Ionescu, surgeon
Tudor Ionescu, socialist politician
Valentin Ionescu, politician
Valeriu Ionescu, writer, published under the name I. Valerian
Vali Ionescu, long jumper
Alexandre Sadi-Ionesco, librarian and bibliographer
Carmen Ionesco, Canadian discus thrower of Romanian descent
Eugène Ionesco, playwright
Eva Ionesco, actress
Irina Ionesco, photographer
Sanda Movilă (born Maria Ionescu), novelist
Urmuz (born Dimitrie Dim. Ionescu-Buzeu), writer
Ionescu Wikipedia (Text) CC BY-SA