Based on filtering the Language Subtag Registry stamped File-Date: 2009-10-05, and then veryfying via Wikipedia etc.

NB! As the registry informs, not all languages with a Latin script based writing system are marked with the Suppress-Script tag. For example Northern Sami, which for the most part is used in Norway and Sweden, isn't mentioned, allthough it is Latin script based (It requires letters outside the Windows 1252 reportoire.)

The list of non-ascii letters in in Windows 1252 – for reference:
ŠŒŽšœžŸµÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ

How to read the table list

"Inside: something" (in green) denotes non-ASCII letters covered by Windows 1252

"Outside: something" (in reed) denotes non-ASCII letter that are not found in Windows 1252

A language might have both a green and a red note.

%% Type: language; Subtag: af; Description: Afrikaans; Added: 2005-10-16 Suppress-Script: Latn
inside: áéèêëíîïóôúûýÁÉÈÊËÍÎÏÓÔÚÛÝ
%% Type: language; Subtag: ay; Description: Aymara; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
inside: unknown. Probably in Spanish?
outside: uknown
%% Type: language; Subtag: bs; Description: Bosnian; Added: 2005-10-16 Suppress-Script: Latn Macrolanguage: sh
inside: ŠŽšž
outside: LjnjdžčđćLjNJDŽČĐĆ
%% Type: language; Subtag: ca; Description: Catalan; Description: Valencian; Added: 2005-10-16 Suppress-Script: Latn
inside: unknown Probably as in Spanish.
outside: unknown
%% Type: language; Subtag: ch; Description: Chamorro; Added: 2005-10-16 Suppress-Script: Latn
inside: Ññ
%% Type: language; Subtag: cs; Description: Czech; Added: 2005-10-16 Suppress-Script: Latn
inside: ŠŽÁÉÍÓÚÝšžáéíóúý
outside:ČĎĚŇŘŤŮ čďěňřťů
%% Type: language; Subtag: cy; Description: Welsh; Added: 2005-10-16 Suppress-Script: Latn
inside: âêîôû
outside: (not exhaustive:) ẁàŵŷ
%% Type: language; Subtag: da; Description: Danish; Added: 2005-10-16 Suppress-Script: Latn
inside: æøåÆØÅ
%% Type: language; Subtag: de; Description: German; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: en; Description: English; Added: 2005-10-16 Suppress-Script: Latn
inside: yes (but very uncommon)
%% Type: language; Subtag: eo; Description: Esperanto; Added: 2005-10-16 Suppress-Script: Latn
outside: ĉĝĥĵŝŭ
%% Type: language; Subtag: es; Description: Spanish ; Description: Castilian_language; Description: Castilian; Added: 2005-10-16 Suppress-Script: Latn
inside: ñ
%% Type: language; Subtag: et; Description: Estonian; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
inside: äöüõšž
%% Type: language; Subtag: eu; Description: Basque; Added: 2005-10-16 Suppress-Script: Latn
inside: ñçü
%% Type: language; Subtag: fi; Description: Finnish; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: fj; Description: Fijian; Added: 2005-10-16 Suppress-Script: Latn
inside: no
%% Type: language; Subtag: fo; Description: Faroese; Added: 2005-10-16 Suppress-Script: Latn
inside: ÁÆÍÐÓØÚÝ
%% Type: language; Subtag: fr; Description: French; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: fy; Description: Western Frisian; Added: 2005-10-16 Suppress-Script: Latn
inside: âéêôû
%% Type: language; Subtag: ga; Description: Irish; Added: 2005-10-16 Suppress-Script: Latn
inside: áéíóú
%% Type: language; Subtag: gl; Description: Galician; Added: 2005-10-16 Suppress-Script: Latn
Notes: probably as in Spanish
%% Type: language; Subtag: gn; Description: Guarani; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
inside: yes
%% Type: language; Subtag: gv; Description: Manx; Added: 2005-10-16 Suppress-Script: Latn
OK
%% Type: language; Subtag: hr; Description: Croatian; Added: 2005-10-16 Suppress-Script: Latn Macrolanguage: sh
inside: ŠŽšž
outside: LjnjdžčđćLjNJDŽČĐĆ preferred … encoding for Croatian … either … ISO 8859-2 …
%% Type: language; Subtag: ht; Description: ; Description: Haitian Creole_language Haitian; Description: Haitian Creole; Added: 2005-10-16 Suppress-Script: Latn
Notes: Probably as in English and French
%% Type: language; Subtag: hu; Description: Hungarian; Added: 2005-10-16 Suppress-Script: Latn
inside: ÁÉÍÓÖ ÚÜ
Ő Ű
%% Type: language; Subtag: id; Description: Indonesian; Added: 2005-10-16 Suppress-Script: Latn Macrolanguage: ms
inside: ÁÉÍÓÖÚÜ
outside: ŐŰ
%% Type: language; Subtag: in; Description: Indonesian; Added: 2005-10-16 Deprecated: 1989-01-01 Preferred-Value: id Suppress-Script: Latn Macrolanguage: ms
inside: apparently nothing.
Notes: Also Arabic script, from religion.
%% Type: language; Subtag: is; Description: Icelandic; Added: 2005-10-16 Suppress-Script: Latn
inside: yes (áæéíðóöúýþ)
%% Type: language; Subtag: it; Description: Italian; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: kl; Description: ; Description: Greenlandic_language, Kalaallisut; Description: Greenlandic; Added: 2005-10-16 Suppress-Script: Latn
inside: yes (since 1973 only Win 1252 letters are used)
%% Type: language; Subtag: la; Description: Latin; Added: 2005-10-16 Suppress-Script: Latn
inside: Yes
%% Type: language; Subtag: lb; Description: Luxembourgish; Description: Letzeburgesch_language; Luxembourgish; Description: Letzeburgesch; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: ln; Description: Lingala; Added: 2005-10-16 Suppress-Script: Latn
inside: [some]
outside: ɛɛ́ɛ̂ɛ̌ɔ (and some more)
%% Type: language; Subtag: lt; Description: Lithuanian; Added: 2005-10-16 Suppress-Script: Latn
inside: ŠŽšž
outside: ĄČĘĖĮŠŲŪŽąčęėįųū
%% Type: language; Subtag: lv; Description: Latvian; Added: 2005-10-16 Suppress-Script: Latn
inside: ŠŽšž
outside: ĀČĒĢĪĶĻŅŠŪŽāčēģīķļņū
%% Type: language; Subtag: mg; Description: Malagasy; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
inside: yes
outside: Wikipedia claims that may be used in dialects: «This can be seen in maps from FTM, the national institute of geodesy and cartography»
%% Type: language; Subtag: mh; Description: Marshallese; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: mo; Description: ; Moldovan; Description: Moldovan_language; Moldavian; Description: Moldovan; Added: 2005-10-16 Deprecated: 2008-11-22 Preferred-Value: ro Suppress-Script: Latn
inside: ÂÎâî
outside: ĂăÂâÎîȘșŞşȚțŢţ
%% Type: language; Subtag: ms; Description: Malay (macrolanguage); Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
unknown
%% Type: language; Subtag: mt; Description: Maltese; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: na; Description: Nauru; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: nb; Description: Norwegian Bokmål; Added: 2005-10-16 Suppress-Script: Latn Macrolanguage: no
inside: yes
%% Type: language; Subtag: nd; Description: North Ndebele; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: nl; Description: Dutch; Description: Flemish; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: nn; Description: Norwegian Nynorsk; Added: 2005-10-16 Suppress-Script: Latn Macrolanguage: no
inside: yes
%% Type: language; Subtag: no; Description: Norwegian; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
inside: yes
%% Type: language; Subtag: nr; Description: South Ndebele; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: ny; Description: Nyanja; Description: Chewa; Description: Chichewa; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: om; Description: Oromo; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
%% Type: language; Subtag: pl; Description: Polish; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
outside: yes
%% Type: language; Subtag: pt; Description: Portuguese; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: qu; Description: Quechua; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
%% Type: language; Subtag: rn; Description: Rundi; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: ro; Description: Description: Moldavian; Description: Moldovan_language; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
outside: yes
%% Type: language; Subtag: rw; Description: Kinyarwanda; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sg; Description: Sango; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sk; Description: Slovak; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sl; Description: Slovenian; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sm; Description: Samoan; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: so; Description: Somali; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sq; Description: Albanian; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
%% Type: language; Subtag: ss; Description: Swati; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: st; Description: Southern Sotho; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: sv; Description: Swedish; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
%% Type: language; Subtag: sw; Description: Swahili (macrolanguage); Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
%% Type: language; Subtag: tl; Description: Tagalog; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tn; Description: Tswana; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: to; Description: Tonga (Tonga Islands); Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tr; Description: Turkish; Added: 2005-10-16 Suppress-Script: Latn
inside: yes
outside: yes
%% Type: language; Subtag: ts; Description: Tsonga; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: ve; Description: Venda; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: vi; Description: Vietnamese; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: wo; Description: Wolof; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: xh; Description: Xhosa; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: zu; Description: Zulu; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: dsb; Description: Lower Sorbian; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: frr; Description: Northern Frisian; Added: 2006-03-08 Suppress-Script: Latn
%% Type: language; Subtag: frs; Description: Eastern Frisian; Added: 2006-03-08 Suppress-Script: Latn
%% Type: language; Subtag: gsw; Description: Swiss German; Description: Alemannic; Description: Alsatian; Added: 2006-03-08 Suppress-Script: Latn
%% Type: language; Subtag: hsb; Description: Upper Sorbian; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: men; Description: Mende (Sierra Leone); Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: nds; Description: Low German; Description: Low Saxon; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: niu; Description: Niuean; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: nso; Description: Description: Northern Sotho; Description: Sepedi_language">Pedi; Description: Northern Sotho; Description: Sepedi; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tem; Description: Timne; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tkl; Description: Tokelau; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tmh; Description: Tamashek; Added: 2005-10-16 Suppress-Script: Latn Scope: macrolanguage
%% Type: language; Subtag: tpi; Description: Tok Pisin; Added: 2005-10-16 Suppress-Script: Latn
%% Type: language; Subtag: tvl; Description: Tuvalu; Added: 2005-10-16 Suppress-Script: Latn
%% Type: variant Subtag: hepburn; Description: Hepburn romanization; Added: 2009-10-01 Prefix: ja-Latn
%% Type: variant Subtag: heploc; Description: Hepburn romanization, Library of Congress method; Added: 2009-10-01 Prefix: ja-Latn-hepburn
%% Type: variant Subtag: pinyin; Description: Pinyin romanization; Added: 2008-10-14 Prefix: zh-Latn Prefix: bo-Latn
%% Type: variant Subtag: wadegile; Description: Wade-Giles romanization; Added: 2008-10-03 Prefix: zh-Latn
%% Type: redundant Tag: az-Latn; Description: Azerbaijani in Latin script; Added: 2003-05-30
inside: ÇÖÜçöü
Outside: ƏəĞğIıİiŞş
%% Type: redundant Tag: be-Latn; Description: Belarusian in Latin script; Added: 2005-01-06
%% Type: redundant Tag: bs-Latn; Description: Bosnian in Latin script; Added: 2005-02-17
%% Type: redundant Tag: iu-Latn; Description: Inuktitut in Latin script; Added: 2005-02-17
%% Type: redundant Tag: sr-Latn; Description: Serbian in Latin script; Added: 2003-05-30
%% Type: redundant Tag: uz-Latn; Description: Uzbek in Latin script; Added: 2003-05-30
%% Type: redundant Tag: yi-Latn; Description: Yiddish, in Latin script; Added: 2003-01-07