diff --git a/src/js/models/AppModel.js b/src/js/models/AppModel.js
index bab9d6b1c..19d471bef 100644
--- a/src/js/models/AppModel.js
+++ b/src/js/models/AppModel.js
@@ -1,6 +1,9 @@
 define(["jquery", "underscore", "backbone"], function ($, _, Backbone) {
   "use strict";
 
+  // Remove any trailing slashes from a URL
+  const NORMALIZE_URL = (url) => url.replace(/\/+$/, "");
+
   /**
    * @class AppModel
    * @classdesc A utility model that contains top-level configuration and storage for the application
@@ -761,9 +764,9 @@ define(["jquery", "underscore", "backbone"], function ($, _, Backbone) {
           /**
            * The base URL for the ORCID REST services
            * @type {string}
-           * @default "https:/orcid.org"
+           * @default "https://pub.orcid.org/"
            */
-          orcidBaseUrl: "https:/orcid.org",
+          orcidBaseUrl: "https://pub.orcid.org/",
 
           /**
            * The URL for the ORCID search API, which can be used to search for information
@@ -2577,13 +2580,13 @@ define(["jquery", "underscore", "backbone"], function ($, _, Backbone) {
               d1CNBaseUrl + this.get("d1CNService") + this.get("formatsUrl"),
             );
           }
+        }
 
-          //ORCID search
-          if (typeof this.get("orcidBaseUrl") != "undefined")
-            this.set(
-              "orcidSearchUrl",
-              this.get("orcidBaseUrl") + "/search/orcid-bio?q=",
-            );
+        // ORCID search
+        const orcidBaseUrl = this.get("orcidBaseUrl");
+        if (orcidBaseUrl) {
+          const searchUrl = `${NORMALIZE_URL(orcidBaseUrl)}/v3.0/expanded-search/?q=`;
+          this.set("orcidSearchUrl", searchUrl);
         }
 
         // Metadata quality report services
diff --git a/src/js/models/LookupModel.js b/src/js/models/LookupModel.js
index c07a3e8ae..6830033e2 100644
--- a/src/js/models/LookupModel.js
+++ b/src/js/models/LookupModel.js
@@ -264,77 +264,82 @@ define(["jquery", "jqueryui", "underscore", "backbone"], function (
         });
       },
 
-      orcidGetConcepts: function (uri, callback) {
-        var people = this.get("concepts")[uri];
+      /** @deprecated since 0.0.0 */
+      orcidGetConcepts: function () {},
 
-        if (people) {
-          callback(people);
-          return;
-        } else {
-          people = [];
-        }
-
-        var query =
-          MetacatUI.appModel.get("orcidBaseUrl") +
-          uri.substring(uri.lastIndexOf("/"));
-        var model = this;
-        $.get(query, function (data, status, xhr) {
-          // get the orcid info
-          var profile = $(data).find("orcid-profile");
-
-          _.each(profile, function (obj) {
-            var choice = {};
-            choice.label =
-              $(obj).find("orcid-bio > personal-details > given-names").text() +
-              " " +
-              $(obj).find("orcid-bio > personal-details > family-name").text();
-            choice.value = $(obj).find("orcid-identifier > uri").text();
-            choice.desc = $(obj).find("orcid-bio > personal-details").text();
-            people.push(choice);
-          });
-
-          model.get("concepts")[uri] = people;
-
-          // callback with answers
-          callback(people);
-        });
-      },
-
-      /*
+      /**
        * Supplies search results for ORCiDs to autocomplete UI elements
+       * @param {jQuery} request - The jQuery UI autocomplete request object
+       * @param {function} response - The jQuery UI autocomplete response function
+       * @param {Array} [more=[]] - An array of additional results to include
+       * @param {Array} [ignore=[]] - An array of ORCiD IDs to ignore in the
+       * search results
+       * @param {number} [numResults=10] - The number of results to return
+       * @returns {Promise<void>}
        */
-      orcidSearch: function (request, response, more, ignore) {
-        var people = [];
+      async orcidSearch(
+        request,
+        response,
+        more = [],
+        ignore = [],
+        numResults = 10,
+      ) {
+        const baseUrl = MetacatUI.appModel.get("orcidSearchUrl");
+        const searchTerm = request.term?.trim();
+        const rowQuery = `&rows=${numResults || 10}&start=0`;
 
-        if (!ignore) var ignore = [];
+        if (!baseUrl || !searchTerm) return response(more);
 
-        var query = MetacatUI.appModel.get("orcidSearchUrl") + request.term;
-        $.get(query, function (data, status, xhr) {
-          // get the orcid info
-          var profile = $(data).find("orcid-profile");
+        let ignoreQuery = "";
 
-          _.each(profile, function (obj) {
-            var choice = {};
-            choice.value = $(obj).find("orcid-identifier > uri").text();
+        if (ignore.length > 0) {
+          const orcidRegex = /^(https?:\/\/orcid\.org\/)?/i;
+          // Expected format: +-orcid:(0000-0002-0879-455X+0000-0001-6238-4490)
+          const ignoreIds = ignore.map((id) =>
+            id.replace(orcidRegex, "").trim(),
+          );
+          ignoreQuery = `+-orcid:(${ignoreIds.join("+")})`;
+        }
 
-            if (_.contains(ignore, choice.value.toLowerCase())) return;
+        const url = `${baseUrl}${searchTerm}${ignoreQuery}${rowQuery}`;
 
-            choice.label =
-              $(obj).find("orcid-bio > personal-details > given-names").text() +
-              " " +
-              $(obj).find("orcid-bio > personal-details > family-name").text();
-            choice.desc = $(obj).find("orcid-bio > personal-details").text();
-            people.push(choice);
-          });
+        let data;
 
-          // add more if called that way
-          if (more) {
-            people = more.concat(people);
+        try {
+          const orcidResponse = await fetch(url, {
+            headers: { "Content-Type": "application/json" },
+          });
+          if (!orcidResponse?.ok) {
+            const reason = await orcidResponse.text();
+            throw new Error(
+              `ORCiD search request failed: ${orcidResponse.status} ${orcidResponse.statusText} - ${reason}`,
+            );
           }
+          data = await orcidResponse.json();
+        } catch (error) {
+          console.error("Error fetching ORCID data: ", error);
+          return response(more);
+        }
 
-          // callback with answers
-          response(people);
+        if ((data["num-found"] || 0) === 0) return response(more);
+
+        const peopleFound = data["expanded-result"] || [];
+
+        const choices = peopleFound.map((result) => {
+          const orcidId = result["orcid-id"];
+          const givenNames = result["given-names"];
+          const familyNames = result["family-names"];
+          const institutionNames = result["institution-name"];
+          return {
+            value: `https://orcid.org/${orcidId}`,
+            label: `${givenNames} ${familyNames}`,
+            desc: institutionNames.join(", "),
+            fullName: `${givenNames} ${familyNames}`,
+          };
         });
+
+        const allResults = more ? more.concat(choices) : choices;
+        response(allResults);
       },
 
       /** @deprecated since 2.36.0 */
diff --git a/test/js/specs/integration/models/LookupModel.js b/test/js/specs/integration/models/LookupModel.js
index 5088aaff8..937b1dc51 100644
--- a/test/js/specs/integration/models/LookupModel.js
+++ b/test/js/specs/integration/models/LookupModel.js
@@ -1,6 +1,4 @@
-define(["../../../../../../../../src/js/models/LookupModel"], function (
-  LookupModel,
-) {
+define(["models/LookupModel"], function (LookupModel) {
   // Configure the Chai assertion library
   var should = chai.should();
   var expect = chai.expect;
@@ -11,6 +9,11 @@ define(["../../../../../../../../src/js/models/LookupModel"], function (
         "grantsUrl",
         "https://arcticdata.io/research.gov/awardapi-service/v1/awards.json",
       );
+      MetacatUI.appModel.set("orcidBaseUrl", "https://pub.orcid.org");
+      MetacatUI.appModel.set(
+        "orcidSearchUrl",
+        "https://pub.orcid.org/v3.0/search/?q=",
+      );
     });
 
     afterEach(function () {
@@ -27,5 +30,82 @@ define(["../../../../../../../../src/js/models/LookupModel"], function (
         expect(awards[0]).to.have.property("title");
       });
     });
+
+    describe("ORCID Search", function () {
+      let fetchStub;
+
+      beforeEach(function () {
+        fetchStub = sinon.stub(window, "fetch");
+      });
+
+      afterEach(function () {
+        if (fetchStub && fetchStub.restore) {
+          fetchStub.restore();
+        }
+      });
+
+      it("formats ORCID v3 search results and respects the ignore list", async function () {
+        const lookup = new LookupModel();
+        const request = { term: "Example" };
+        const moreResults = [{ value: "existing-user" }];
+        const ignore = [
+          "https://orcid.org/0000-0000-0000-0001",
+          "0000-0000-0000-0002",
+        ];
+        const numResults = 5;
+
+        const apiResponse = {
+          "num-found": 1,
+          "expanded-result": [
+            {
+              "orcid-id": "0000-0001-7648-6754",
+              "given-names": "Test",
+              "family-names": "User",
+              "institution-name": ["Org A", "Org B"],
+            },
+          ],
+        };
+
+        fetchStub.resolves({
+          ok: true,
+          status: 200,
+          statusText: "OK",
+          json: () => Promise.resolve(apiResponse),
+        });
+
+        const responseSpy = sinon.spy();
+
+        await lookup.orcidSearch(
+          request,
+          responseSpy,
+          moreResults,
+          ignore,
+          numResults,
+        );
+
+        fetchStub.calledOnce.should.equal(true);
+        const callArgs = fetchStub.firstCall.args;
+        expect(callArgs[0]).to.equal(
+          "https://pub.orcid.org/v3.0/search/?q=Example+-orcid:(0000-0000-0000-0001+0000-0000-0000-0002)&rows=5&start=0",
+        );
+        expect(callArgs[1]).to.have.property("headers");
+        expect(callArgs[1].headers).to.deep.equal({
+          "Content-Type": "application/json",
+        });
+
+        responseSpy.calledOnce.should.equal(true);
+        const results = responseSpy.firstCall.args[0];
+        expect(results).to.be.an("array").with.lengthOf(2);
+        expect(results[0]).to.deep.equal(moreResults[0]);
+
+        const newPerson = results[1];
+        expect(newPerson.value).to.equal(
+          "https://orcid.org/0000-0001-7648-6754",
+        );
+        expect(newPerson.label).to.equal("Test User");
+        expect(newPerson.fullName).to.equal("Test User");
+        expect(newPerson.desc).to.equal("Org A, Org B");
+      });
+    });
   });
 });