diff --git a/csharp/ql/lib/semmle/code/csharp/Element.qll b/csharp/ql/lib/semmle/code/csharp/Element.qll
index 2c69912c993..ccfd1a27925 100644
--- a/csharp/ql/lib/semmle/code/csharp/Element.qll
+++ b/csharp/ql/lib/semmle/code/csharp/Element.qll
@@ -101,25 +101,6 @@ class NamedElement extends Element, @named_element {
   /** Holds if this element has name 'name'. */
   final predicate hasName(string name) { name = this.getName() }
 
-  /**
-   * Gets the fully qualified name of this element, for example the
-   * fully qualified name of `M` on line 3 is `N.C.M` in
-   *
-   * ```csharp
-   * namespace N {
-   *   class C {
-   *     void M(int i, string s) { }
-   *   }
-   * }
-   * ```
-   */
-  cached
-  deprecated final string getQualifiedName() {
-    exists(string qualifier, string name | this.hasQualifiedName(qualifier, name) |
-      if qualifier = "" then result = name else result = qualifier + "." + name
-    )
-  }
-
   /**
    * Gets the fully qualified name of this element, for example the
    * fully qualified name of `M` on line 3 is `N.C.M` in
@@ -142,16 +123,6 @@ class NamedElement extends Element, @named_element {
     )
   }
 
-  /**
-   * DEPRECATED: Use `hasFullyQualifiedName` instead.
-   *
-   * Holds if this element has the qualified name `qualifier`.`name`.
-   */
-  cached
-  deprecated predicate hasQualifiedName(string qualifier, string name) {
-    qualifier = "" and name = this.getName()
-  }
-
   /** Holds if this element has the fully qualified name `qualifier`.`name`. */
   cached
   predicate hasFullyQualifiedName(string qualifier, string name) {
diff --git a/csharp/ql/lib/semmle/code/csharp/Member.qll b/csharp/ql/lib/semmle/code/csharp/Member.qll
index 1be091170e3..a2758f03942 100644
--- a/csharp/ql/lib/semmle/code/csharp/Member.qll
+++ b/csharp/ql/lib/semmle/code/csharp/Member.qll
@@ -71,37 +71,10 @@ class Declaration extends NamedElement, @declaration {
 
   override string toString() { result = this.getName() }
 
-  deprecated override predicate hasQualifiedName(string qualifier, string name) {
-    QualifiedName<QualifiedNameInput>::hasQualifiedName(this, qualifier, name)
-  }
-
   override predicate hasFullyQualifiedName(string qualifier, string name) {
     QualifiedName<FullyQualifiedNameInput>::hasQualifiedName(this, qualifier, name)
   }
 
-  /**
-   * DEPRECATED: Use `getFullyQualifiedNameWithTypes` instead.
-   *
-   * Gets the fully qualified name of this declaration, including types, for example
-   * the fully qualified name with types of `M` on line 3 is `N.C.M(int, string)` in
-   *
-   * ```csharp
-   * namespace N {
-   *   class C {
-   *     void M(int i, string s) { }
-   *   }
-   * }
-   * ```
-   */
-  deprecated string getQualifiedNameWithTypes() {
-    exists(string qual |
-      qual = this.getDeclaringType().getQualifiedName() and
-      if this instanceof NestedType
-      then result = qual + "+" + this.toStringWithTypes()
-      else result = qual + "." + this.toStringWithTypes()
-    )
-  }
-
   /**
    * Gets the fully qualified name of this declaration, including types, for example
    * the fully qualified name with types of `M` on line 3 is `N.C.M(int, string)` in
@@ -263,17 +236,6 @@ class Member extends Modifiable, @member {
   /** Gets an access to this member. */
   MemberAccess getAnAccess() { result.getTarget() = this }
 
-  /**
-   * DEPRECATED: Use `hasFullyQualifiedName` instead.
-   *
-   * Holds if this member has name `name` and is defined in type `type`
-   * with namespace `namespace`.
-   */
-  cached
-  deprecated final predicate hasQualifiedName(string namespace, string type, string name) {
-    QualifiedName<QualifiedNameInput>::hasQualifiedName(this, namespace, type, name)
-  }
-
   /**
    * Holds if this member has name `name` and is defined in type `type`
    * with namespace `namespace`.
diff --git a/csharp/ql/lib/semmle/code/csharp/Namespace.qll b/csharp/ql/lib/semmle/code/csharp/Namespace.qll
index 002ce444b3f..383fe8ab2a8 100644
--- a/csharp/ql/lib/semmle/code/csharp/Namespace.qll
+++ b/csharp/ql/lib/semmle/code/csharp/Namespace.qll
@@ -38,16 +38,6 @@ class Namespace extends TypeContainer, Declaration, @namespace {
     parent_namespace(result, this)
   }
 
-  /**
-   * Holds if this namespace has the qualified name `qualifier`.`name`.
-   *
-   * For example if the qualified name is `System.Collections.Generic`, then
-   * `qualifier`=`System.Collections` and `name`=`Generic`.
-   */
-  deprecated override predicate hasQualifiedName(string qualifier, string name) {
-    namespaceHasQualifiedName(this, qualifier, name)
-  }
-
   /**
    * Holds if this namespace has the qualified name `qualifier`.`name`.
    *