您可以使用Text normalization in Go中描述的库。
下面是这些库的一个应用：

// Example derived from: http://blog.golang.org/normalization

package main

import (
    "fmt"
    "unicode"

    "golang.org/x/text/transform"
    "golang.org/x/text/unicode/norm"
)

func isMn(r rune) bool {
    return unicode.Is(unicode.Mn, r) // Mn: nonspacing marks
}

func main() {
    t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)
    result, _, _ := transform.String(t, "žůžo")
    fmt.Println(result)
}

在现有答案的基础上扩展一下：
用于比较不同字符集字符串的互联网标准被称为“PRECIS”（应用协议中国际化字符串的准备，实施和比较），并在RFC7564中记录。在golang.org/x/text/secure/precis中也有一个Go实现。
没有一个标准的配置文件可以满足您的要求，但是定义一个新的配置文件可以满足您的要求，这是相当直接的。（“D”表示“分解”，这意味着重音将被分离并成为它们自己的组合字符），然后作为附加Map规则的一部分移除任何组合字符，然后用规范化规则重新组合。就像这样：

package main

import (
    "fmt"
    "unicode"

    "golang.org/x/text/secure/precis"
    "golang.org/x/text/transform"
    "golang.org/x/text/unicode/norm"
)

func main() {
    loosecompare := precis.NewIdentifier(
        precis.AdditionalMapping(func() transform.Transformer {
            return transform.Chain(norm.NFD, transform.RemoveFunc(func(r rune) bool {
                return unicode.Is(unicode.Mn, r)
            }))
        }),
        precis.Norm(norm.NFC), // This is the default; be explicit though.
    )
    p, _ := loosecompare.String("žůžo")
    fmt.Println(p, loosecompare.Compare("žůžo", "zuzo"))
    // Prints "zuzo true"
}

这可以让您扩展您的比较与更多的选项后（例如。宽度Map，情况下Map等）
同样值得注意的是，在比较这样的字符串时，你几乎从来都不想删除重音符号，然而，在不知道你的用例的情况下，我实际上不能对你的项目做出这样的Assert。为了防止precis配置文件的激增，最好尽可能使用现有的配置文件之一。还要注意的是，没有努力优化示例配置文件。

transform.RemoveFunc已弃用。
相反，你可以使用runes包中的Remove函数：

t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
result, _, _ := transform.String(t, "žůžo")
fmt.Println(result)

如果你想知道如何在Go语言中删除（或者替换/扁平化）波兰语的变音符号，你可以定义一个符文Map：

package main

import (
    "fmt"

    "golang.org/x/text/runes"
    "golang.org/x/text/secure/precis"
    "golang.org/x/text/transform"
    "golang.org/x/text/unicode/norm"
)

func main() {

    trans := transform.Chain(
        norm.NFD,
        precis.UsernameCaseMapped.NewTransformer(),
        runes.Map(func(r rune) rune {
            switch r {
            case 'ą':
                return 'a'
            case 'ć':
                return 'c'
            case 'ę':
                return 'e'
            case 'ł':
                return 'l'
            case 'ń':
                return 'n'
            case 'ó':
                return 'o'
            case 'ś':
                return 's'
            case 'ż':
                return 'z'
            case 'ź':
                return 'z'
            }
            return r
        }),
        norm.NFC,
    )
    result, _, _ := transform.String(trans, "ŻóŁć")
    fmt.Println(result)
}

On GoPlayground：https://play.golang.org/p/3ulPnOd3L91

下面是一个JS代码的改编：Remove accents/diacritics in a string in JavaScript，它回答了@paperback-writer关于“”字符的评论。
我在Go anywhere中找不到这段代码，这个stackoverflow是Google查询“go remove diacritics”的第一个结果。
希望有帮助！

/*
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package main

import (
    "fmt"
    "regexp"
    "unicode/utf8"
)

var defaultDiacriticsRemovalMap = []struct {
    base    string
    letters string
}{
    {"A", "\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F"},
    {"AA", "\uA732"},
    {"AE", "\u00C6\u01FC\u01E2"},
    {"AO", "\uA734"},
    {"AU", "\uA736"},
    {"AV", "\uA738\uA73A"},
    {"AY", "\uA73C"},
    {"B", "\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181"},
    {"C", "\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E"},
    {"D", "\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779\u00D0"},
    {"DZ", "\u01F1\u01C4"},
    {"Dz", "\u01F2\u01C5"},
    {"E", "\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E"},
    {"F", "\u0046\u24BB\uFF26\u1E1E\u0191\uA77B"},
    {"G", "\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E"},
    {"H", "\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D"},
    {"I", "\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197"},
    {"J", "\u004A\u24BF\uFF2A\u0134\u0248"},
    {"K", "\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2"},
    {"L", "\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780"},
    {"LJ", "\u01C7"},
    {"Lj", "\u01C8"},
    {"M", "\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C"},
    {"N", "\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4"},
    {"NJ", "\u01CA"},
    {"Nj", "\u01CB"},
    {"O", "\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C"},
    {"OI", "\u01A2"},
    {"OO", "\uA74E"},
    {"OU", "\u0222"},
    {"OE", "\u008C\u0152"},
    {"oe", "\u009C\u0153"},
    {"P", "\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754"},
    {"Q", "\u0051\u24C6\uFF31\uA756\uA758\u024A"},
    {"R", "\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782"},
    {"S", "\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784"},
    {"T", "\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786"},
    {"TZ", "\uA728"},
    {"U", "\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244"},
    {"V", "\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245"},
    {"VY", "\uA760"},
    {"W", "\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72"},
    {"X", "\u0058\u24CD\uFF38\u1E8A\u1E8C"},
    {"Y", "\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE"},
    {"Z", "\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762"},
    {"a", "\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250"},
    {"aa", "\uA733"},
    {"ae", "\u00E6\u01FD\u01E3"},
    {"ao", "\uA735"},
    {"au", "\uA737"},
    {"av", "\uA739\uA73B"},
    {"ay", "\uA73D"},
    {"b", "\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253"},
    {"c", "\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184"},
    {"d", "\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A"},
    {"dz", "\u01F3\u01C6"},
    {"e", "\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD"},
    {"f", "\u0066\u24D5\uFF46\u1E1F\u0192\uA77C"},
    {"g", "\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F"},
    {"h", "\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265"},
    {"hv", "\u0195"},
    {"i", "\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131"},
    {"j", "\u006A\u24D9\uFF4A\u0135\u01F0\u0249"},
    {"k", "\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3"},
    {"l", "\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747"},
    {"lj", "\u01C9"},
    {"m", "\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F"},
    {"n", "\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5"},
    {"nj", "\u01CC"},
    {"o", "\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275"},
    {"oi", "\u01A3"},
    {"ou", "\u0223"},
    {"oo", "\uA74F"},
    {"p", "\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755"},
    {"q", "\u0071\u24E0\uFF51\u024B\uA757\uA759"},
    {"r", "\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783"},
    {"s", "\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B"},
    {"t", "\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787"},
    {"tz", "\uA729"},
    {"u", "\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289"},
    {"v", "\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C"},
    {"vy", "\uA761"},
    {"w", "\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73"},
    {"x", "\u0078\u24E7\uFF58\u1E8B\u1E8D"},
    {"y", "\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF"},
    {"z", "\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763"},
}

var diacriticsMap = map[rune]string{}

func init() {
    for _, mapping := range defaultDiacriticsRemovalMap {
        letters := mapping.letters
        for _, letter := range letters {
            diacriticsMap[letter] = mapping.base
        }
    }
}

func removeDiacritics(str string) string {
    reg := regexp.MustCompile("[^\u0000-\u007E]")
    return reg.ReplaceAllStringFunc(str, func(a string) string {
        r, _ := utf8.DecodeRuneInString(a)
        if replacement, ok := diacriticsMap[rune(r)]; ok {
            return replacement
        }
        return a
    })
}

func main() {
    paragraph := "Têstôöłæ" // -> Testoolae
    fmt.Println(paragraph, removeDiacritics(paragraph))
}