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diff --git a/doc/man3/EVP_PKEY_settable_params.pod b/doc/man3/EVP_PKEY_settable_params.pod
new file mode 100644
index 000000000000..6760818cda79
--- /dev/null
+++ b/doc/man3/EVP_PKEY_settable_params.pod
@@ -0,0 +1,83 @@
+=pod
+
+=head1 NAME
+
+EVP_PKEY_settable_params, EVP_PKEY_set_params,
+EVP_PKEY_set_int_param, EVP_PKEY_set_size_t_param, EVP_PKEY_set_bn_param,
+EVP_PKEY_set_utf8_string_param, EVP_PKEY_set_octet_string_param
+- set key parameters into a key
+
+=head1 SYNOPSIS
+
+ #include <openssl/evp.h>
+
+ const OSSL_PARAM *EVP_PKEY_settable_params(const EVP_PKEY *pkey);
+ int EVP_PKEY_set_params(EVP_PKEY *pkey, OSSL_PARAM params[]);
+ int EVP_PKEY_set_int_param(EVP_PKEY *pkey, const char *key_name, int in);
+ int EVP_PKEY_set_size_t_param(EVP_PKEY *pkey, const char *key_name, size_t in);
+ int EVP_PKEY_set_bn_param(EVP_PKEY *pkey, const char *key_name,
+                           const BIGNUM *bn);
+ int EVP_PKEY_set_utf8_string_param(EVP_PKEY *pkey, const char *key_name,
+                                    const char *str);
+ int EVP_PKEY_set_octet_string_param(EVP_PKEY *pkey, const char *key_name,
+                                     const unsigned char *buf, size_t bsize);
+
+=head1 DESCRIPTION
+
+These functions can be used to set additional parameters into an existing
+B<EVP_PKEY>.
+
+EVP_PKEY_set_params() sets one or more I<params> into a I<pkey>.
+See L<OSSL_PARAM(3)> for information about parameters.
+
+EVP_PKEY_settable_params() returns a constant list of I<params> indicating
+the names and types of key parameters that can be set.
+See L<OSSL_PARAM(3)> for information about parameters.
+
+EVP_PKEY_set_int_param() sets an integer value I<in> into a key I<pkey> for the
+associated field I<key_name>.
+
+EVP_PKEY_set_size_t_param() sets an size_t value I<in> into a key I<pkey> for
+the associated field I<key_name>.
+
+EVP_PKEY_set_bn_param() sets the BIGNUM value I<bn> into a key I<pkey> for the
+associated field I<key_name>.
+
+EVP_PKEY_set_utf8_string_param() sets the UTF8 string I<str> into a key I<pkey>
+for the associated field I<key_name>.
+
+EVP_PKEY_set_octet_string_param() sets the octet string value I<buf> with a
+size I<bsize> into a key I<pkey> for the associated field I<key_name>.
+
+=head1 NOTES
+
+These functions only work for B<EVP_PKEY>s that contain a provider side key.
+
+=head1 RETURN VALUES
+
+EVP_PKEY_settable_params() returns NULL on error or if it is not supported,
+
+All other methods return 1 if a value was successfully set, or 0 if
+there was an error.
+
+=head1 SEE ALSO
+
+L<EVP_PKEY_gettable_params(3)>,
+L<EVP_PKEY_CTX_new(3)>, L<provider-keymgmt(7)>, L<OSSL_PARAM(3)>,
+
+
+=head1 HISTORY
+
+These functions were added in OpenSSL 3.0.
+
+=head1 COPYRIGHT
+
+Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut
+