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Here, a fully organic route to fabricate artificial hyperbolic metamaterials based on multilayered thin films of J\u2010aggregate carbocyanine dyes alternated with polyelectrolytes is introduced. These structures exhibit strong optical anisotropy and experimentally support hyperbolic surface exciton polaritons and, for selected dyes, additional surface waves in near\u2010zero permittivity regimes. Spectroscopic ellipsometry confirms a uniaxial dielectric tensor with negative in\u2010plane and positive out\u2010of\u2010plane components, close to the absorption peaks of the constituent J\u2010aggregates. This anisotropy is preserved across individual layers, demonstrating the robustness of the layer\u2010by\u2010layer approach and enabling the coupling of surface exciton polaritons and surface waves even in films only a few nanometers thick. Transfer\u2010matrix simulations based on the obtained dielectric tensor reproduce the coupling conditions for all thicknesses, validating the optical model. Structural characterization reveals the link between optical anisotropy and supramolecular order with preferential in\u2010plane molecular orientation and the evolution from discrete nanostructures to continuous films as deposition progresses. These organic hyperbolic metamaterial architectures, associated with narrow excitonic resonances from J\u2010aggregates, offer a unique platform for tailoring emission, energy transport, and exploring polariton dynamics at the nanoscale.<\/jats:p>","DOI":"10.1002\/nap2.70235","type":"journal-article","created":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T04:42:46Z","timestamp":1789447366000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Hyperbolic Surface Exciton Polaritons and Surface Waves in Near\u2010Zero Permittivity Regions Supported by Artificial Organic Hyperbolic Metamaterials"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-8056-5345","authenticated-orcid":false,"given":"Jos\u00e9 N.","family":"Gama","sequence":"first","affiliation":[{"name":"CINBIO Universidade de Vigo Campus Universitario As Lagoas  Vigo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4551-9343","authenticated-orcid":false,"given":"Diogo","family":"Cunha","sequence":"additional","affiliation":[{"name":"Centro de F\u00edsica das Universidades do Minho e do Porto (CF\u2010UM\u2010UP) Universidade do Minho Campus de Gualtar  Braga Portugal"},{"name":"International Iberian Nanotechnology Laboratory (INL)  Braga Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5043-6302","authenticated-orcid":false,"given":"Carla","family":"Est\u00e9vez\u2010Varela","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia de Materiales de Madrid (ICMM) Consejo Superior de Investigaciones Cient\u00edficas (CSIC)  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5183-9960","authenticated-orcid":false,"given":"Marina","family":"Garc\u00eda\u2010Pardo","sequence":"additional","affiliation":[{"name":"Instituto de \u00d3ptica (IO) Consejo Superior de Investigaciones Cient\u00edficas (CSIC)  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7526-5191","authenticated-orcid":false,"given":"Pablo","family":"Pedreira","sequence":"additional","affiliation":[{"name":"ALBA Synchrotron Light Source Cerdanyola del Vall\u00e8s  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3957-6288","authenticated-orcid":false,"given":"Adelaide","family":"Miranda","sequence":"additional","affiliation":[{"name":"International Iberian Nanotechnology Laboratory (INL)  Braga Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0748-5050","authenticated-orcid":false,"given":"M. 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