Reasonable Optical Near Joint Access, an optical point-to-point Free Space Optics data link
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Ronia the Robber's Daughter (Ronja Rövardotter), a children's book by Astrid Lindgren
Vainola has also written music for several stageplays (e.g. "Ronja", "Huck", "Daamide õnn" ja "Mort, surma õpilane", and songs (e.g. "Riia mu arm", "Insener Garini hüperboloid", "Elagu Proudhon!", "Pille-Riin", "Subatlantiline kohtumine", "Eleegia", "1905" and "Kaks meest").
Ronja Mannov Olesen (born on 5 July 1987 in Copenhagen) is a Danish actress who mainly acted in En mand kommer hjem, a Danish movie directed by Thomas Vinterberg (2007).